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SOY/20-122-3-20/57 Compounds of Bexyllium Hydroxy Acetate With Sulfur Dioxide decomposition of the first was observed in the system. The stability of the compounds decreases,with the increase in temperature. It is remarkable that in this case the values of the heats of formation (on the average 9,22 kcal per I g mol SO 2) are lower than in the normal case of coordination compounds. Furthermore, it is of interest that at -100 (boiling point of so2) the discussed compounds ha-.9 the characteristic features of solid soliations and can exist only at increased Pressure. According to,.radiographic analyses Be4O(GH3coo)6. 2SO2c~ystal- lizes in a cubic diamond-like lattice with a period of the elementary cell of a - 17,1 1. The density at -120 - 1X, roentgen density - 1#42; In conclusion a rough outline of the structure of this substance is given. There are 2 figures and 7 references, 4 of which are Soviet. ASSOCIATION: Hoskovskiy gosudarstvennyy universitet im. M. V. Lomonosova Card 3/4 (Moscow State University imeni Mo V. Lomonosov) 3(8) SOV/7-59-1-3/14 AUTHORS: Sobolev, B. P.,, Novoselova, A. V. TITLE: On the Role of Fluoride Compounds in the Transport of Beryllium and the Formation of Phenacite (0 roli ftoristykh soyedineqiy v perenose berilliya i obrazovanii fenakita) PMODICAL: Geokhimiya, 1959, Ur 19 pp 20-26 (USSR) ABSTRACT: The authors synthesized phenacite from beryllium - and silicon oxide. The following materials served as mineralizers: NaF, BeF2 and the fluoberyllates of alkalis. The latter preparations were supplied by N. S. Tamm and L. 1-1. Mikheyeva. A carefully produced mixture was sealed in quartz ampoules (Figs 2 and 3) and heated in shaft furnacen. The temperature regulators BRIT-47 and EPD-17 were used in this process. Ex- periments at different temperatures and with different mineral- izers (Tables I to 3) gave the following results: the formation of phenacite from BeO and SiO 2 in the presence of fluoberyllates is a heterogeneous reaction, i.e. via the gaseous state. The authors assume the following mode of formation: Card 1/2 (1) sio2 + 2 NaBeP 3- sip 4 + 2 BeO + 2 Nap SOV/7-59-1-3/14 On the Role of Fluoride Compounds in the Transport of Beryllium avd the Formation of Phenacite (2) SiP4 + BeO SiOF2 + BeF2 4 SiOF + 2 NaBeP Be Sio '+ 3 SiP + 2 1TaF 2 3 2 4 4 Because of the transport reactions phenacite can be "over- distilled". The paragenesis of phenheite in the various deposits and the morpholoqical similarity of synthetic and natural crystals (Pigs 4 to 7) suggest that fluoberyllates play a lead- ing part in the andogeneous formation of phenacite. The authors express their gratitude to A. A. Beus for reviewing the results. There are 7 figures, 3 tables, and 25 references, 11 of which are Soviet. ASSOCIATION: Kafedra neorganicheskoy khimii rioskovskogo gosudarstvennogo universiteta im. AM. V. Lomonosova ( Chair of Inorganic Cbemistry of Moscow State University imeni M.V. Lomonosov) SUBMITTED: September 24, 1958 Card 2/2 S&Lc;Wj, A-v, 5(2) SOY/156-59-1-15/54 ,.AUTHORS.- Ukrainskiyt Yu. M.# Novoselova, A. V.,, Simanov,, Yu. P. TITLE: Investigation of the System Vanadium - Tellurium (Isaledova- niye sistemy vanadiy - tellur) PERIODICAL; Nauchnyye doklady vysshey shkoly. Khimiya i khimicheskaya tekhnologiYa, 19599 lir 1i pp 62 - 66 (ussR) ABSTRACT-. Unlike vanadium sulfides and selenides the system of tellurides has not yet been investigated in its entirety. The synthesis of vanadium-tellurium compounds: V and Te in various ratios were-heated for 500 hours up to 8000 in quartz ampoules which were closed by melting in vacuum. Temperature gradually decreased to room temperature for a period of 400 hours. This was done in order to cause the formation of com- pounds which are unstable at higher temperatures. The samples obtained were radiographically investigated. The V lines disappear already with a composition VTeO.200 The roentgeno- gram of this t~ phase remains unchanged up to We Even 0-77* Card 1/3 with a wide are of traverse a shift of the interference lines Investigation of the System Vanadium - Tellurium SOV/156-59-1-15/54 does not occur. Hence a tetrahedral coordinatior -f the atoms in this phase is assumed. Since the atom radii of Te and V are almost similar one can be substituted for the other in the crystal system without the interference lines being shiftel. At VTeO.82 the diffraction picture changes suddenly. The . (~ phase is formed,the range of which lies between VT9 0.82 and VTei.270 At VTe 1-50' corresponding to V,Te 3' the next phase follows the width of which, however, could not be found be- cause the roentgenograms of the next sample (VTe 1.63 ) were useless. VTe2 is characterized by its angles of reflection. With a higher tellurium content there are again lines of elementary tellurium. Thus the sample with the stoichiometric ratio VTe3 indicates only the lines of VTe2 and Te. Conse- quently, higher tellurides are not formed. The Debye roent- genograms of the f9 and phase could not be explained. The ~,phase showed more than 100 lines, the phase 60 - 65. Con- Card 2/3 sequentlyg a less symmetrical (monoclinic or triclinic) Investigation of the System Vanadium - Tellurium SOV/156-59-1-15/54 ASSOCIATION: SPBUITTED: structure of these phases is to be assumed. V2Te 3 probably is monoclinic. At We22modifications were found; the one is scale-like, the other forms elastic threads. Debye diagrams of these thread-like crystals were plotted (Table) and the axes were measured. It was found: a = 6.47 kx, b- 7.28 kX and c. 6.26 kx (rhombic syngony). Diagrams of the conductivi- ty and thermo-electromotive force (Fig) show characteristic maxima for the phases % and 5and for We 2' The conductivity of all samples decreased after three months, however, it remained so high that a metallic character of the bond in the vanadium tellurides may be presumed in view of the weak electromotive force. There are 3 figures, I table, and 9 references, 4 of whichAre Soviet. Kafedra neorganioheakoy khimii Moskovskogo gosudarstvennogo universiteta im. M. V. Lomonosova (Chair of Inorganic Che- mistry of Moscow State University imeni M. V. Lomonosov) October 1, 1956 Card 3/3 I. j V2. 0' .2 .41 206. ruse 3t a AJ 1,211 -. .% I ON Av 11MA: INA C I A !22 ,f *3 ail E 0-.0i No 04 0.0a -A Z 12' 1 S v ON A_ _gq .110 2 g-. sit c 0A &Z"', I of-M !H 111 NO: 2-01:44Htil HZJ C.-CA..0.0 .."a. Z 3 1: FZZ a So . 01t, ILI "A " 1 9. 'Tw 9 IS 2-211 Istiffl. it OZZ V 'gua at ; !.. , a A vc~ % HUM -H&H.Hi i's H **.SH.; NDVOSEWTA, A.V. 9 Determination of beryllium oxide impurtles in a copper-bery,111um alloy. Zav.1&b. no.11:1292-1293 '59- (MIRA 13:4) I.WoskoTskly gosudarstrennyy univereftet in. X.T.Lamonosova. (Copper-beryllium alloys - Analysis) (Beryllium oxides) 1.2 0 67036 AUTHORS: Batsanovap-LeRej UMV01-seloyal 1.1- SOT/153-2-5-20/31 TITLE: On the Glass-like Beryllium 7luoride and Several glass Types Based on It PERIODICAL: Izvestlys, vy9shikh uchobnvkh zavedeniy. Xhimiya i khimicheakaya tekhnologiya, 1959, Vol- 2j, Nr 5, pp 751-754 (USSR) ABSTRACT: In the state diagrams of systems containing beryllium fluoride, some ranges are known within the limits of which the malts harden like glass when cooling (Refs 1-5). The authors investigated the optici!j, properties of several types of glass of ber-yllium fluoride.Xb The pure glass type of beryllium-, fluoride was compared in a chemical and optical respect ' h the above types of glass. A platinum crucible was used Art melting which was placed into a closed steel- or quartz con- tainer. At a high temperature (1,000*0a glass is formed which has a higher degree of transparency, and Is free of air bubbles. The authors also-prepared glasses by addition of magnesium-, calcium-, strontium-, barium- and aluminum fluorides. -They did not succeed in producing glass without the addition of potassium fluoride. The glass formation Card 1/3 succeeas when a sufficient quantity of BeF2 (at least 45% by 67036 On the Glass-like Beryllium Fluoride and SIDT/153-2-5-20/31 Several Glass Types Based on It weight) are added. One may start from a mixture of fluorides as well as from fluorine beryllates, i.e. from K2BeF 49 KBeF3 or f%""'&EFY2BeP2' mixed with fluorides of other metals. Glass containing beryllium and potassium fluoride can also be molten in an open dish. If keeping these glass types in open air for a longer period, a thin dull film forms. Both the glass-like B012 and glass types containing only BeY2 and KY are very unstable, and become rapidly dull in open air. The hygroscopy of these glass types considerably reduced by the addition of fluorides of bivalent metals. The forming of the dull film can be irevented by storing in a dry place and by using rubber gloves. The film ?&n also be ground off. Figure I shows the light pArmeabilityl*turves in the ultraviolet range.(wave length 220-320 m^ ). Be?2 glass in impermeable to short waves (220-230 m/A). It becomes more permeable with increasing wave length. The remaining glass types are permeable in the whole 220-320 m/k range. BeF2 glass is permeable in the whole infrt- Card 2/3 red range up to 5.5 /x (Fig 2, Curve 1) and has its minimum 67036 On the Glass-like Beryllium.Fluoride and SOT/153-2-5-20/31 Several Gl'ass,Typea.Based on It light permeability at 2 8 It is impermeable between 5-5 and 151A. The permea lity curves of the glass types of three components are similar to the curve of BeF . The table (P 753) contains the refractive indices of the ifass types examined. The last-mentioned measurements were carried out by Ye.P. Markin: and Y.P. Cho remi ainov? staff membiers of the 7izicheskiy institut AN SSSR (Physics Institute of the AS US001. 2!V There are 2 figures, I table, and 10 referenceag 5 of which are Soviet. APSOCIATICE: Moskovskiy gosudarstvennyy universitet imeni K.T. Lomonosoval Kafedra. neorganicheskoy khimii (Moscow,State University Imeni 1j;-Lomonozov; Chair,of Inorganic Chemistry) _~SUMITTZD: June 11, 1958' Card 3/3 18(6) AUTHORSt Ukrainakly, Tu, M.t Novoselova, A, T. SOV/76-4-1-26/48, Simanov, Yu. P. TITLEv Investigation of the Tantalum-Tellurium System (Issledovaniye sistemy tantal - tellur) PERIODICALt Zhurnal'noorganichookoy khimii, 1959, Vol 4, Nr 1, pp 148-152 (USSR) ABSTRACTs The tantalum tellurides were investigated. For the production of tantalum tellurides pure tantalum powder with slight impurities (niobium 0.3% and titanium 0.1%) and pure tellurium (99.99%) were used. Ba means of the differential thermic analysis it was found that the reaction between tantalum and tellurium begins at J50 0- The sintering of tellurides was carried out at 800 . X-ray analyses and determinations of the electric conductivity and of the thermo- electromotive force were carried out. In the system Ta-Te the compound TaTe and two compounds of varying composition ip were found as fo ows:-~_phase TaTe 0.85-1.2 and P rhase TaTe 1,5-2.0* A diagram of the phase composition of the Card 1/2 system Ta-Te which had been obtained by sintering the com- Investigation of the Tantalum-Tellurium System S07176-4-1-26146 ponents during a period of 400 hours at 900 0' and hardening during a period of 150 hours at 5000 was plotted. The curve of the specific electric conductivity shows a maximum at the TaTe3 composition. The electric conductivity of the samples varies considerably depending on the conditions under which the eamplao'have been prepared. The curve of the dependence of the thermo-alootromotiva force on the composition shows a minimum with TaTe 3* The high value of the specific electric conductivity and the low value of the thermo-electromotive force show that the chemical bond in TaTe 3 is semi-metallic. The preparations with the composition TaTe 0.8-0.5 are unstable in air. Lower tellurides were not found in the tantalum- 4ellurium system. There are 5 figures and 4 references, 2 of which are Soviet. SUBMITTEDs October 1, 1957 Card 2/2 5(2) SOV/76-4-3-10/34 AUTHORS: Turova, N. Ya., Novoselova, A. V., Semenenko, K. N., Savostlyanova, TITLE: On the Phenolates of Beryllium (0 fenolyatakh berilliya) PERIODICAL: Zhurnal neorganicheokoy khimii, 1959, Vol 4, Nr 3, pp 549-552 (USSR) A3STRACT: The interaction between beryllium chloride and P-naphthol and p- and m-cresols has been investigated and the properties of the resulting phenolates have been described. The reaction of beryllium chloride with o-, p-, m-cresol takes place at 90-1000C. The interaction of p- and m-cresol with BeCl 2 takes place under a strong development of HC1. The phenolates of beryllium are white, amorphous, hygroscopic substances, which slowly hydrolize In air. Thermographic and radiographic investigations were carried out. The following phenolat6s have been prepared: P-naphthol beryllium (Be(OC 10H7)2 and Be(p-OC7H7)2 and Be(m-OC 7H7)2. The phenolates of beryllium are slightly soluble in benzene and xylene, stable in ether. Card 1/2 Decomposition occurs under the action of methyl alcohol. ,On the Phenolates of Beryllium SOV/78-4-3-10/34 There are 1 figure and 7 references, 2 of which are Soviet. SUBMITTED: January 4, 1958 Card 2/2 50) AUTHORS-z Breusov, 0. N., Trapp, G., SOV/78-4-3-27/34 Novoselov manovp Yu. P. TITLE: Thermal and X-ray Phase Analysis of the System SrF 2 - BeF2 (Termicheskiy i rentgenofazovyy analiz sistemy SrF2 - BeF 2) PERIODICAL: Zhurnal neorganicheskoy khimii, 1959, Vol 4, Nr 3, pp 671-677 (USSR) ABSTRACT: The system SrF,-BeF2 was investigated by the method of differential-thermal and X-ray phase-analysis. Beryllium fluoride was produced by thermal decomposition of ammonium beryllium fluoride and strontium fluoride from strontium carbonate and hydrofluoric acid. For the production of melts with a content of 0-50 mole % BeF2 SrF 2 and strontium beryllium fluoride were used. For alloys with 50-97 mole'4 BeF2 melts from strontium chloride and ammonium berylli,im fluoride were used. Melts with more than 50 mole 16' BeF2 are Card 1/3 hygroscopic. The phase diagram of the system SrF 2-BeF2 was Thermal and X-ray Phase Analysis of the 90V/78-4-3-27/34 System SrF2 BeF2 plotted. At 8831180 beryllium strontium fluoride forms a eutectic with strontium fluoride. Strontium beryllium fluoride melts congruently at 954,+.100, and at 923e0 a polymorphic transformation occurs. SrBeF4 forms with beryllium fluoride a eutectic at 582+270. On the thermogram of the melt with 65 -tf, BeF2 effects-occur at 384�130 and 334�50, the nature of which could not be found by X-ray analyses. The compound SrBeF4 was determined by X-ray analysis. This compound occurs in three modifications; oc,~, and r. From an aqueous solution theP form of SrBeF4 precipitates with impurities of the e form. Thermal and X-ray investigations of strontium beryllium fluoride were carried out and two schemes were given for the formation of the modification; melt 954 0(-SrBeF4JZV-A~SrBeF 4 V6640,r -SrBeF4 Card 2/3 Thermal and X-ray Phase Analysis of the SOV/78-4-3-27/34 System SrF2 - Bep2 and the transformation: melt 9540 - Cx - 9230 __=1 ~209 3780----~ There are 1 figure, 3 tables, and 10 references, 5 of which are Soviet. SUBMITTED: March 1, 1958 Gard 3/3 BOV/78-4-5-lo/46 ~AUTNORB: ~TukOvao ff- Tat, NOY0361ovas At V*t Semonenko~ K. go TITIZ: On the Alcoholates of Beryllium (Ob alkogolyatakh berilliya) PERIODICAL'.: Zhurnal neorganicheskoy khimii, 19591 Vol 4, Nr 5# PP 997-1901 (USSR) ABSTRJLCT: The syntheses for ~,f the alcoholates of beryl- lium. were investigated and some properties of beryllium ethylate were diecuseed. The reaction between metallic beryl- lium and absolute ethyl alcohol van recommended in the pre- selnee of BaCl 9 11g01 or J for the purpose of synthetizing beryllium eQlate. geryllium ethylate of the composition Be(OC 2H5)2 is a white amorphous substance. The product is not soluble in water and in the usual organic solvents. Several properties of beryllium ethylate, especially its behavior with respect ot.absolute ethyl aicohol, anhydrous acetic acid, and alcoholic BeCl 2"solution. were investigated. In the inter- action between beryllium ethylate and anhydrous acetic acid 4 in an ether medium an insoluble compound with the composition Be(OC 2H5)(OCOCH 3) is formed after some hours with a molar Card 1/2 ratio of components of 1:1. In the intera~;ticz of beryllium On the Alcoholates of Beryllium SOV/713-4-15- 1 0/46 ethylate with 0-5 N beryllium chloride solution, beryllium ethylate dissolves completely in absolute ethyl alcohol within two hours. With the evaporation of this solution a syrup-like mass is formed. The dissolution process of berylliuia ethylate is connectei with the formation of complex compounds of the type BOOR) BeCl or Be(BeCl 0 in alcoholic BeCl.-solu- V. 2 2( RY tion. The interaction between beryllium and absolute methyl alcohol shows that, in the presenoG of BeCi 21 HgCl and J, a compcund *f variable composition is formed., for wRich the general formula [xBe(OCH 3)2'YBe(0CH3 )Hal] n holds. In the in- teraction between BeCl 2 and Na [Be(OCH 341 a mixture of NaCl and Be(OCH 3)2 is formed. There are 13 refereneae, 3 of which are Soviet. ASSOCIATION: Moskovskiy gosudarstvennyy universitet im. M. V. Lemonosova (Moscow state University imeni M. V. Lom~.-nosov) SUBMITTED: February 31 1958 Card 2/2 $07/76-4-5-45/46 Turovao IF. Ya.f Novoselova, A. V-, Semenenkol K. ff. Thesynthesis of the Etherates of Beryllium Halides (Sintez efiratov~galogenidom berilliya) PERIODICAL: Shurnal neorganicheakoy khimii, 19599 Vol 4, Nr 59 pp 1215-12% (USSR) ABSTRACT: The synthesis of theetherates of beryllium chloride and -bo~.*Mun bromide is carried out by the direct interaction betwe6n*the metallic beryllium and halogens.or hydrogen Ichloride in an absolute ether medium. The syntheses of the etherates of bromides and iodides of beryllium are carried out in the nitrogen flow. The following compounds were isolat- ed: BeC12'2(C 2H 0.0 and BeBr2.2(C2H5)20. The melting tempera- tures of the etherates of beryllium chloride and beryllium bromide agree well with the data given by the authors for preparations produced by the interaction of anhydrous halides with ether. It was not possible to represent etherate of beryllium iodide in the purest form. The method described for the synthesis of the etherates of beryllium halides is Card 1/2 of a general character and may be used for the production of SOV/78-4-5-45/4-6 The Synthesis of the Etheratea of Beryllium Halides etherates of other metal halides. There are 2 references$ I of which is Soviet. SUBMITTED: December 15, 1958 Card 2/2 5(2) S0V/TBQ4-M,-T/40 Bteusovo-O.-N.-O-Vagurtovai Ni, V., Novoselova A V., Sima*DT, Yu.., P.. TITLE: On the Thermal'-De 'composition of-Ammonium-fluoro-baryllate 2BeF4' Zh~irnai fiebrgani6haskoy khimiii 1959i Vol 4; N i0i~',_` PE;kIODICALi r ~p 2213-;22i9 (USSR) ABSTRAM. Sizi6e thd- reaction under review represents the principal method for.the produation'of*bryitalline beryllium fluoride, the- bourse of this process- was investigated.-The duthors mention in brief.the.publications available so far on thi's'problen and espedially-point out the paper by A. V.-Novoselova and N.-Yao AvqrkqV& (:~ef 14) wh6 fii-st-obtainea the ammonium-meta-flubro- be'rkllate NK Be1P in aadi-iioa'io'the ammnnitLm-ortho-fluoro- 4 , 3 beryllate (31 eP *.The-thermal decompositio'n-of the ortho- 23. ~4 compound'An the inert gas current gi7ves only ~bwyieldsp wtere- fore this reaction~wa_s-inves'tig'ated under decreased pressure. ftgur~a I shows the d(icbmposil-ion ourve at continuous increase Card 1/2 in temperatur'e' where no~ breaks can be seen. On gradual heating SOV/78-4-10-7/40 On the Thermal,-DeoompositiQn o~ Ammonium-4luoro-berylla"'.9 (SH )930FA 4 up to W, 180, 2050 220 and 2400 (Pigs 2 and 3) it becomes evident that the dacomposition takes place in three stages: (ME ) BeF _.*.N14BeF MR Be F, --a--BeF . Table 1 presents the 4_2 4 4 .2 5 2 o , (Nil analysis f ) 'BeF 'j' table 2, that of Ngeo F e The lattice 4. 2 - 4 2 5 oonstants~of.NR Bs-F were Calculated on the basis of a radio- 4 2 5 ' gram obtaine 'd by means of the MU"86 chamber and found to belong to_thd"hexa4onal'syngony (cable 3)- In the same way.the corresponding lattice oonstants were calculated from the radio- grams, of KBa 1? (Table 4) and a-CsBe F I (Table 5). The ra:dio~. .2 5. 2 5 grams axe shown in figure 4. Table 6 presents the data for the oempounds.of the.N&IBe2F5 type,,table 7,compares the lattice constants of NH39 F f KBe F and a-CaBe 7 There are 4 2 5 2 5 2 5* 4 figures, 7 tables, and 12 references, 8 of which are Soviet* SUBMITTED: June 19F 1958 Card 212 SOV/78-4-10-8/40 Kerneyevs,,J~,V.jr Novoselovap As V* TITLE: On 'the Thermal Decomposition of Selenites and Selenates of Zinc'-and Cadmium .7 PERIODICLL: Zhurnal neorganichaskoy khimii, 1959, Vol 4P Nr 10, pp-:2220-2227 (USSR) ABSTRACT: The thermal stability of the compounds mentioned in the title is important with xespe~t_ to. the iproduction -of luminophoric materialand-to:the glads industryb%noe there are no:data availatle, in. pub lioations -on ~ thi-9 'prAlemj, these compounds were.laveatigated by meins of thermographico thermogravimetric, and X---ray analysixv, The.ihitial products corresponded,with the composirtion ZnSeO ,0d3 ZnSeO I . 31 8031 4*'3920 ,and, CdS9Or'R2O (Tabi*~s'-l and 2),._The Debys powder method at analisi's"was car- ried oUtLb~ qe0Lnivof,a BSV.t-ube and different cameras of the ~JM ty~eilhe heating curves were determined by peans of the pyrometer of N~ S.- Kurnakov; The- thermal analysis- indiodtos , . - that ihe~seleiiiitis ~f 'Ana' and cadmium are less stable than the sel6nitds'and'thus bel~aire in,an opposite way gs compared to Card i/2 the correi4ponding sulfates and sulfites. The conversion SOV/78-4-10-8/40 On 'the Thermal Decrompogifoi= of Selenites and-Selonates of Zinc and Cadmium 4t-- 6+ 4+~~ S6+ Se -Flse I is more difficult than the conversion 5 H.Seo reij%iir6s -1o-15 v, whereas for 11 so -0-H so 2 .3 "w Ye04 2 3. . 2 4 4.17 y are sufficient., A-further difference lies in the nature of the decomposition by temperatu're'influenaed' While the sulfate-9 dpoompose, according to., the. equation Meso hw selonates of Zn and Cd form the *ao, 8027, + 72102".t corresponding ~elenites under-polymorphic transformations, similar *to: the. -sel enates;of Ba, Srj~_~Pb-.- Zinc selenate and zinc seleriits yierld basic'-saLta on dbaom~cdition. There are 10 figures, 2,1tablesi and 8.refereneeaf;-4 of which are Soviet. ASSOCIATION:~ Koskovskiy gosudarstvennyy -u-niversite-t'im.'K. V. Lomonosova 0. lomo,013OV) (116816 ow ~-Stife Unkiersity i*eni Kai 7- n .SUBMITTED: April 12,'1959 Card 2/2 5(2) BOV/78-4-1 o-38/4o AUTHORS: Turovao IF, Ya.j Novoselova, A. V., Semer-enkc, K. N.. TITLE: On Compounds of Beryllium Chloride With Tetrahydrofuran PERIODICAL: Zhurnal neorganicheskoy khimii, 1959, Vol 4, Nr lo, pp 241o - 241*35R) ABSTRACT: The system BeCl2 tetrahydrofuran was investigated in the temperature range 78 UP to +1500 (Table 1: S9lubilitj, Fig 1: Phase Diagram, Fig 21 Dependence of logC on At low temperature BeCl,-3C4 H80 is formed as solid phase at the bottom which decomposes at -20 to yield BeCl 2' 2C4H80. This melts at 1500 wAhout decomposition, is more stable than the etherate of beryllium.chloride when exposed to air, well soluble in ben- zene and insoluble in petroleum ether. There-are 2 figures, I table, and 4 references, 3 of which are Soviet. ASSOCIATION: Moskovskiy gosudarstvennyy universitet im. K. V. Lomonosova (Moscow State University imeni K. V. Lomonosov) SUBMITTED: May 22, 1959 Card 1/t 05692 AMORSI G#Cor'y*vq A. log Novqselavay A* Ve SOT/78-4-11-45/50 TITIMI On the.Interaction.of .1017211U.01:0x7formlate and -oxypropionate 10ith Ammonia PZRIODICAL -s Zhurnal neargitnicheskoy Irbiall, 19599 VOI.4. Nr 11, -pp~-'21 40-2641, OSSR) Providus Papers ~'(Rofs -1.5) -dealt with the reaction of 'geryllium ox7"*tat*# a compound of ~ the type B4 02~ In wbldh R denotes the 4 .69 radical of a monobasic organic aald:1,with ammonia and aalnes. With respect to the kind of.productIon and.chemical. behaviours the oxyproplonats -now Investigated differ* little f ran the ox3racetate coupounde - fte'.~ owarmlate hovsvtry cannot be produced - like these coupounds -41rectYLy, from, the orgwda said and the beryllivin bydroxidelor but in only obtained after & va6tmm distillation -of. the.nornal beryllium foralate. The reaction of the Pe~-ox;ypropionati- and -ozyforsiate with ammoula was Inwasti-. S%t*4 vnder, equal,canditions as they am applied In preparing the aampound-No O(CH COO) 4M 2U oxypropionato yielded the 4 3 3 Card.1/2 ~Ou thejnteraotloA of Beryllium Oxytormlate and SOT/78-4-11-45/50 -ozy.propionatalwith Ammords ;GUPQWA. Be 0(6AdOO)6.5M3 no Ro 4P("C()0)6 howeverg reacts -4 ~:"tk-= 'to form afLnelyLorystalline precipitate the analysis of WbIoIL Is' given' but foi- the coaposit,oft~of VhIGh no formula is got TAPO-The filtrate was evaporated. in the vaouum for several days, and formed a viscous nonerystallixing sees. There are 4 Aoftdt references. AUMTTnI July 99 1959 66293 00 4; V AMOM.~ ftihInkJA -A 5; ~-TIT 11sesurouslat oellthwIrOsuro of Solurated,vapor of Solid LQa4 twide -2660 _P~KRIODICAL4. khIxIL9I,-1j90# i2g, pP 26~co7 mRY ABSTRACT-.: :Conotercial- Ullukim- -always,. adatkins lead- laouritie ably a Prob 'Ai his-, '11it -the ro of - telluride i Thi tfioit ~of t artlal*,miastwed sid4t lurld'o vapor _-:pressurt. *:a aigkt~ be puilfiet by- iib ikxtion,~Or vi~~ di Aillation., N r- Ahir:att"0*44.~~to:_ ricalli a i Ive produce, photoelect. at faxi fron: PbU - th '64~, oiap; PbT* r_ rati6xxi resulted frost fusion A .p4 i outhi_ wo'compone sAo ome_ to ratio.4nalysin and -rajr p ctures Oonfirit 4 -tht: degres. of DUZItj of the result- Th4l,:Vts wat: sublimated a :60rc and 10. a tow.r*, jw. it's, and., ictures.of the sublimates "$-Was, to, of 66293 SOV/78-4-12-1/35 Measurement of the Pressure of-saturated Vapor of Solid Lead Telluride Affl, was based upon the assumption that AN be **notes* with- in the narrow temperature range of the experiment. Me Is thuss, fairly volatile~substsncov Ron**# It-le.possible that impurities be added tothe condensate by sub.11mated1bTe In vaeuvin distillation of telluriua,, as In confirmed by So A. Sen*nkovich N.4. IAstashav'_ (Ref 18), No P. Smirnov and 0.'A. Bibenini: (Ref 19).., The authors thank Yu. P, Simanoy for advice given In X-ray examinations. Thor* art 2 figurest 4tableng'and 19 referenceng 10 of which are Soviet* ASSOCIATION: Noskovskly gosudarstvennyy universitet In. Me To Lononosova (Mosoom state University imeni No V. Losonosov) Card 3/4 66293 SOT/78-4-12-1/35 Measurement of th* Pressure of Saturated Vapor of Solid Lead Telluride SUBMITTED: September 6. 1958 Card 4/4 66294 --r- 4.a710 (A) SOV/78-4-12-2/35 AUTHORS: zlommovq Ve, Peg PopovkIn, No As ff6vosslovap Ae To ---------- TITLE: Measiurosiont of the Pressure of Saturated Vapor of Solid Lead Wenide PERIODICAL: Zhurnal noorganichookoy kh,laiit 19599 Vol 4, Wr 12# pp, 2661-2664 (USSR) ABSTRACT: Photoelectrically active PbSe films were produced by vacuua tv aporation of PbSe and subsequent heating In an atmosphere of low oxygen pressure (Ref 2). For this procedure It In essential to know the vapor pressure of PbSe at different tem- peratures. The author do this Investigation within the to&- perature'range 501-66:0MC. The PbSe was obtained by fusion of the.two components In stoichionetric ratio. Analysis and X-M pictures conflmed the degree of purity of the resulting com- .pound. It was further shown that PbSe to Identical with Its sublimate (Tablel). 2h 10 pressure of the saturated vapor was measured (Table 2) by a method earlier described (Ref 10). Vapor pressure measurement was also made according to Knudsen within 0 the tsmperaturs~range 641-418 (Table 4). The opening of the .-effusion chamber .was gauged (Table 3) by means of potasslua Card.1/2 chloride evaporation according to data published by Ae 66294 SOV/78-4-12-2/35 Measurement of the Prossure.of.Saturated Vapor-of-solid Lead Selanide, Seeneyanov and 4o Bazonov -(Ref 11). Tbo vapor pressure of PbSe follows the equation: 1-1032 + 10-084. log P [t Orr] T The sublimation heat AN was 50-47 kcal/nol. There are I figure, T 4 tableaq an4 11 referencess 5 of which are Soviet* Pro, SUBMITTED: September 16t 1958 Card 0 5(2) AUTHOR: Novoselove, P. 11 (moscow) SO V/74-26- 1- 2/5 TITLE- Der7llium Fluoride and Fluoroberyllates (2toristy,,; ber-illil, i f toroberillaty) PERIODICAL: Uspekhi khiriiii, 1959, Vol 28, fir 1, pP 33-43 OSSEO ABSTRACT: In this paper the authoreoz repbrts her investigations on beryllium fluoride compoundo. 'B"eryllium fluoride can be prepared in various ways. The simplest of' these is the thermal decomposition of ammonium fluaroberyllate (.,:11 4)2BeF4 (Ref 2). BeF2 is a poor conductor of electricity in the molten state (Ref 4). Its structlure if, different from that of other bivalent metals which crystallize in the same manner as fluorite (CaF 2) or rutile (TiO 2). All kno-an modifications of BeF 2 are similar to the structure of SiO 2- Contradictory data are given in publications for their relative melting temperatures. This is becaus3 of the fact that the melting process for -BeF 2 is very complex. The most probable phase diagram for BeF 2 is given Card 1/4 (Fig 1) on the basis of known melting temperatures and Beryllium Fluoride and Fluoroberyllates SO-V/74-28-1-2/5 polymorphic transformations. "Por the thermogram for heating the BeF2 a definite endotherm-ic effect has been observed at 545 - 5500. It has been found by visual. observation that a partial melting of the BeF 2 takes place at this temperature. Apparently there are polymeric molecules of varying composition present in the molten BeF 2 which are very slowly transformed from one form to another. On the basis of the phase rule this does not represent a one-component system. Possibly 5450 is the eutectic temperature in this system. MeF-BeF2-H20 systems. BeF2 is easily soluble in water. Because of its small size the beryllium ion has a very strong electrical field and therefore form numerous complez compounds. With fluorides of alkali metals BeF 2 forma fluoroberyllates of several types; hie 2BeF 4? MeBeF MeBe P BeF 2- ion has a tetrahedral structure 31 2 5 4 (hybridization. Sp;)(Ref 15). The solubility of fluoroberyllates increases with increase in the cation radius (Table 2). In aqueous solution the BoP 2- ion is partially dissociated, 4 Card 2/4 Beryllium hydroxide precipitates from solutions of BeF 2and Beryllium Fluoride and Fluoroberyllates SOV/74-28-1-2/5 and barium fluorides. Beryllium is in the first place of the II. group of the periodic system of Kendeleyev. Its cheaical properties are similar to those of aluminum, and in the second group it is most similar to zinc; it differs strongly from the earth alkali metals. Many compounds of Zn and Be are Yery similars hydrides, oxides, silicates, and oxyacetates. Of particular note is the similarity between the structures and properties of the oxyacetates Be 4O(CII 3000)6 and Zn4 O(CII3cOO)6# The tendency for Zn and Be to form complex compounds arises from the appreciable eizes of their ion potentials. These can be estimated by comparing their crystal-chemical electro- negativities. Figure 9 lists the values of the electro- negativities of the group II. metals (Ref 49). The first striking thing is ihe periodic variation shown, and secondly, that the electronegativities of Zn and Be are very close. This also seems to be the reason why Be is more similar chemically to Zn than to the earth alkali metals. There are 9 figures, 3 tables, and 72 references, 35 of which are Soviet. Card 4/4 5(2) SOV/20-125-3-25/63 AUTHORSt Grigorlyev# A. I., Novosolova, A. V., Corresponding Member ' AS USSR, Ssasnoak~ t X. TITLE: On the Compound Formed by Beryllium Oxy-scetate and Nitrogen Dioxide (0 soyedinenii oksiatootata berilliya a dvuokislyu &sot&) PERIODICAL: boklady Akademii nauk SSSR, 1959, Vol 125, Nr 3, PP 557-559 (USSR) ABSTRACT: forms adducts with NO , similar It was found that Be 0(CEYGO) . 6 4 to those formed with SO 2 (Be4O(0K3C0O)6' 2302 and Be O(CH 302). The mentioned oxy-acetate is well soluble 4. 3COO)6' in"liquid nitrogen dioxide at room temperature. If this solu- ..tion to vaporized achromatic needlelike anteatropic crystals are separated. They decompose quickly in air under formation of brown 90 2-vapors. After this decomposition beryllium oxy- acetate is left back in its cubical basic modification. The composition of the 6rystale may be approximately described by Card 1/3 the following formulas: Be 4O(CH 3COO)6-3HO2 or SOV/20-125-3-25/63 On the Compound Formed by Beryllium Oxy-acetate and Nitrogen Dioxide Do4O(CH 3C00)6'1s,5N2040 By means of the measurement of the mag- netic susceptibility was found that N 204 probably takes part in the mentioned compounds. In order to define their couposition precisely as well as in order to determine the possibility of formation of other compounds in the system beryllium oxy- acetate - nitrogen dioxide the diagrams; composition - vapor pressure at constant temperature were plotted. The tensi- eudionoter of Uttig (Khyuttig) served for this purpose. Its main parameters and the method were the same, as in reference I with the exception of s.'small modification which takes the ag~ gressiveness of the gas into account because it reacts with mercury.. After 2-3 bours the equilibrium in the system was re- established. Figure- I shows isothermal lines at 10.0 an 1 .0 0C. Their general shape shows that the compound Be 4 O(CH 3COO)6.1,5N204 is separated by the evaporation of the saturated Be 4O(CH 3COO)6 solution in the liquid 90 2* No - . other compounds wart Card 2/3 found to exist in the system. The last mentioned compound dis- SOT/20-125-3-25/63 On the Compound formed by Beryllium Oxy-acetate and Sitrogen Dioxide sociates as a true chemical compound in contrast to the two compounds formed with 30 . (mentioned above). The decomposition of the two last mentioned compounds proceeds by the formation of phases of variable composition. This contrast in assumed to explain the quicker establishment of the dissociation equilibrium of the compound with NO2. The dependence of the dissociation pressure was explained by the isothermal lines (Table It Fig 2). Furthermore the compound obtained was investigated radiographi- cally, its density and crystalline structure determined. There are 2 figures, I table, and 4 references, I of which is Soviet. ASSOCIATION: Moskovskly goeudarstvanny universitet im. H. V. Lomonosova (Moscow State University imeni N. V. Lomonosov) SUBXITTED: January 2, 1959 Card 3/3 (2) AUTHORS: Vovoselova. Corresponding Member SOY/20-126-1-25/62 Yu. V., Sim-anov, Yu. P., Xovbaj, L. K. TITLE: A Row Series of Polymorphous Transformations of Na 2BeF4 (0 novom ryade polimorf-iykh prevrashcheniy ffa2BeF 4) PERIODICAL.,... Doklady Akademii nauk 63BRo 1959P voi 126, Nr 1, PP 93 - 96 (USSR) ABSTRACT: After a survey of publications (Refs 1-e) concerning sodium- -fluoro-beryllate the authors found that the needlelike Na 2BeF4 crystals obtained from an aqueous solution represent an inde- pendent modification of this compound. They call the latter 6-Na2BeF4 . The authors drew this conclusion on the strength of a thermographic and X-ray investigation. Figure 1 shows the ra- -diogram at 20,360,410,470 and 510 0 , figure 2 the heating-thermo- gram and figure 3 the thermogram of the mentioned modification. .-The diffraction'class of the crystals could riot be determined Card 1/2 1 sined the latter is not complete. The comparison of all "cold" k New Series of Polymorphous Transformations of 507/20-126-1-25/62 Na2BeF and "hot" radiograms confirms the phase transformations shown in figure 2, furthermore their irreversibility. The 6-phase can be considered as an initial phase of a series of polymorphous varieties formed by it. These latter do not agree with those of the series t.-Na.BeF (Table 1). The transformati.on series des- 4 cribed here is not similar at all to the transformations of Ca2SiO4. There are 3 figures, 1 table, and 12 referenceso 3 of which are Soviet. ASSOCIATION: Moskovskiy gosudarstvennyy universitet im. M. V. Lomonosova (Moscow State University imeni U. V. Lomonosov) SUBMITTED: January 21, 1959 Card 2/2 0 66737 JO SOT/20-129-2-27/66 AMMORS8 Nwatov#- F. Shsq Novoselova, A. V., Corresponding Member,, AS USSR TITLEs Investigation of the Equilibrium in the Reduction-reaction of Beryllium Oxide by Carbon at High Temperatures PERIODICALs Doklady Akademii nauk SSSR, 1959, Vol 129, Nr 2? PP 334-336 (USSR) ABSTRACT: The remotion mentioned in the.title oarried out at high tempera- tures, in the air or in a protection gee leads to the formation of cc beryllium carbide (Refs 1-3)-.1n vacuumq reduction begins at 1315 In a rsaotion carried out atll,-W*C 1getallio beryllium was found in the condensate. The'authors investigated the reaction mentioned In the title in the rar-ge-betweav,1400 and 2000'C by means of the manoustrio method which is tfie best suited at nigh temperatures (Refs 6-7). The reduction agent was charcoal freed from the ash by hydrofluoria and hydrochloric acids The minutely sifted initial substances were roasted in vacuum at 2,000*C, stoiahiom@tric amounts were carefully mixed, and were then pressed to rodlets under a pressure of 300 kg/ai2. The reaction equilibrium was Investigated with an arrangement similar to the one described in reference 9e It was ascertained that an equil!brium pressure may Card 1/3 be attained only between 17000 isnd 19500 X9 as was conaludedfrom 66737 Investigation of the Equilibrium in the Reduction- SOV/20-129-2-27/66 reaction of Beryllium Oxide by Carbon at High Temperatures the linear dependence; free energy , temperature and from the analysis of the reaction products. Apart from the non-reacted initial substances# beryllium carbide was contained in the reaction products at these temperatures. At higher temperatures the arrbon oxide pressure. #ter first attaining a maximum (Fig 2 T - 2160' K), begins to drop raVidly without attaining any definite final value. Table.1p figure I shows the changes in pressure and free energy of rsaotion* The dependenoe 43 T (free energy in the range 1700-1950%),,On temperature is expressed# for reaction (1) by equation &Z T --50864 - 19.22 T. The reaction products (Fig 2) corresponding to the rise in the curve contain Be 2Ct BeO and C. An almost pure carbon corresponds to the dropping part of the curve. The time during which the maximum pressure is maintainedp depends on the amount of the reaction mixture. The smaller the weighed amount, the shorter is this time span. A considerable quantity of sublimate deposits on the cool parts of the system. According to radiographic analysis (made by K.N. Semenenko) it Card 2/3 showso apart from lines of beryllium oxide and oxygen, nty 3(2) SOT/20-129-5-26/064 AUTHOaS t Kuratov, F. Sh. Corresponding Member, AS USSR, Cbm Hain TITLEs Determination of the Solubility of Beryllium Oxide in the Liquid Copper - Beryllium Alloy PERIODICAL: Dokiady'Akademii. nauk SSSRj 19590 Vol 129. Nr 59 PP 1057 - 1059 (USSR) ABSTRAM Opinions concerning the form in which beryllium oxide is contained in metallic beryllium are contrasting. According .to reference I beryllium forms*an eutectic with beryllium -oxide. Other researchers deny.this (Refs.2,3) and hold beryllium oxid*.to occur in beryllLun in the form of Inclus- ions only. Also concerning the places,in which the oxide concentratos., i.e. whether at the grain boundaries only (Ref 4) or also inside the grains (Ref 5) uniform opinion. The authors in -vestigated,the subject under review on alloys with 9% Beat 1254-15170. An adequate mixture of ooppert beryllium# and beryllium oxide powders (0-5-1% of the weight Card 1/3 of the alloy) was pressed to briquettes and annealed in Doterminatidn of the Solubility of Beryllium Oxide SOT/20-123-5-26/64 Liqui d Copper Beryllium Alloy 0 vacuum at 800 for 8h. Figure I shows the apparatus used for determining-th* solubility under vacuum In argon atmosphere. On melting, the Cu-Be alloy collsots in the lower part of tho:pot (1). On the alloy.sur face there is a layer of the beryllium oxide contained in high excess in the briquettes. The alloy is vigorously stirred by way of high-frequen4 currents. In tineg an-equilibrium is brought about beti;yen the 'o':iid* solved in the alloyand the one on its surface. This equilibrium is.attained between~0.5 and 2 h at 12540 for the system Be0-CuBe. (Zit) when the BeO content in the alloy is from 0.010 to 0.039%. The latter was measured according to the method of referencea 7 and S. At the same time, the' total Be content was determined. This Be content agreed on principlewithout divergences with thecaloulated content. Table I shown the determination results of the solubility mentioned in the title as lying between 12540 and 15170 C. The system beryllium oxide - copper - beryllium alloy is pseudo-binavy with a constant Be content. In the case of BeO Card 2/3 actually solving in the alloy, and the solution being an Determination of the Solubility of Berylliua Oxide BOV/20-129-5-26/64 in the Liquid Copper - Beryllium Alloy ideal one, the dependence of the solubility value on temperature must then obey the equation by Schroeder (Ref 9). It may be observed from figure 2 that the said. dependence is-linear and-can be expressed by equation (1), with N Boo being the mol content of beryllium.oxide in the alloy. The coefficients in equation (1) were determined by the method of the least squares. It follows from solution (1) that the solution heat of BeO in the Cu-Be alloy is & H(1527-17900)- 16430 Cal/mol. Figures 3 a and 3 b show the midr,)structure -of the Cu-Be alloyst a - not annealed; no BeO inclusions are visiblej b - annealed in vacuum at 8000 for 15h. BeO was se- parated in the latter case. The grains of the a-phase (Ref 10) and BeO inclusions are visible here. There are 3 figures, 1 table, and 10 references, 4 of which are Soviet. ASSOCIATION: No kovskiy gosudarstvannyy universitet im. M. V. Lomonosovs, (X:scow State University imeni M. V. Lomonosov) SUBMITTED: August 14, 1959 Card 3/3 NOTOSA"A. A-Y. I DATMOVA. L-JL lowtIoa of spharo (tltanlto) wlth nodlus fluosIllests. Izv.Slb. 6tA.AX SM no.8:1AZ-,143 960. (MIRA 13:9) 1. hwtitut neorgualchookey'kh'all Sibirskago otdolonlya AX SSSR. (Sodlim fluosliteatfi) (Titanits) MUTOV9 F.She; NOVOULOVAp A.V.; Cmou-sim [Chou HaIng] R~ftctLon. of berylLtm oxide by carbon and beat in the pres4ace of cappr. lzvovpuchsb-z&v.; tavet-met. 3 no.2:113-118' t60. (MIM 15:4) 1. Nukovskly gosudarstvennyy unlversitet,, kafedra nearganicheakoy (Berylliua-Hatanurgy) 0 68 102 BOT/78-5-1-IA5 An Korneyova, I. V., Belyayev, A. T., Novolse TITLE, Determination of the Pressure of Saturated Tapor of Sol14 .Tollurideelof Zinc~,Iand Cadmiuml PERIODICAL: Zhurnal neorganiches~?Y khimii, 1960, Vol 5, Nr 19 pp 5 7 (USSR) ABSTROT: out that publications give no We on the pro*- 1he authors, point . sure,of saturated vapor,of ZmTo.and CdTo. In-the experimental ~ :,Vart they roporton the.preparation of thetwo compounds from ~~ Zino of the type TsO'(QO5T:3640-4T)# oadmium of the type ZgO i h. had been obtained sc- (GOST A .467 -42) 9:' and pure tolltiritwo.hic cording to references 40, The:aomponints wort-fused In stoi- - quarts. ampoules* The vigorous re- chionstric evactiatod action of.Zn with,Te is roferred to. Tables 1.2 show the an&- lysis data of the'ltwo'1*11urides.lhe lines of the radiographs simanov) ~ Mrsod. with, the data of publications ("~on by Yu &nd.,ohowed no,:11noe of ~ th4 froo components. The Investigation of the coupounds.oublimid it 7000 showed that"theIr composition . is not changed by sublimation. The vapor pressure of ZnT* was CardA/2 deteriined within the temy Ierature range 520 - 72000 that of 68102 Determination of the Pressure of Saturated Vapor of Solid SOV/78-5-1-1/45 Tellurides of.Zine and Cadmium ddTe within the range 450 - 6609; the method of determination described in:reference 9 was used. The results are shown in tables 4P5 and figure 1. The simuitaneous.determination by the effusion method yielded corresponding results. The opening of the-effusioll ohamber-was calibrated with KCI (Table 3). The following computations ware made: AR of ZnTe - 48.65 kcal/mol, AN of CdTe - 43-46 kcal/mol, assuming that the sublimation does not depend on temperature An the temperature range investigatedo The resultant values of the pressure of the saturated.vapor of these tellurides speak,in favor of the poo- oibility of purifying these compounds by sublimation and of using then in semiconductor technique. There are 1 figurep 5 tables, and 13 references, 9 of which stra Soviet. ASSOCIATION: Moskovskiy gosudaretvennyy universitet (Moscow State University) SUBMITTED October 6, 1958 Card 2/9 TUROVA, ff.-fa.; LIOTOMWTA. A-V-; SUNIM&O, K-U- Solubility in the ovates beryllium chloride dietherate- ethyl other. Zhur-nearg.khtm. 5 no,l#-117-123 Ja 160. (1411U 13:5) 1. Moskovskly gosudaratvennyy universitat Im. M.Y.Lamonoaova. (Beryllium compounds) (Rather) It 5(2) 3/07Y60 AUTHORSt Korneyeva, 1. 7 B004 BO%005/02/001/045 gokoloy, V, V&# flovoselova, A. V. TITIXt Pressure of Saturated Vapor of Solid Zinc- and Cadmium Selenide PERIODICALs Zhurnal neorgani6henkoy khimily 1960, Vol 5, Ur 2, pp 241-245, (USSR) ABSTRACT# lt~ was the purpose of this paper to obtain data on the behavior of We and Me since they are not available in publications, These substances.might in future play a part in the trans- formation of nucldn~z energy into electric energy, as photo- multipliers,'etc. The authors describe the preparation of the selenides from Ts-O zinc (GOST-3640-47), Kg_O cadmium (GOST- 1467-42 , and seleniumi especially used for rectifiers (G03T- 6738-53~ by fusing them together in quartz vials in a stoichio- metric ratio. Since the molten components do not mix, and the strongly exothermal reaction takes place only in the gaseous phaaep and on the interface at temperatures near the melting point, explosions of the vials occurred frequently so that it was necessary to operate with small quantities. Tablea I an(L:~,, Card 1/2 give the analyses of the resultant selenides. ZnSe was ob- Pressure*.of Saturated Vapor of Solid Zinc- and S/07BJ60/005/02/001/045 Cadmium Selenide Boo4/Bo16 tainod only in the cubic modification of the sphalerite type, CdSe only in the hexagonal modification of the wartzite type. Analysis and radiograms confirmed that the sublimation takes place without decomposition* The vapor pressure was determined according to the method described in reference By and according to Knudsen (Tables 4,5).. Table 3 gives the calibration of the effusion chamber by means of KC1 vapor. Figure I shows the og p on.1.103- linear dependence of 1 T The following sublimation heats were determined-z AH subl ZnSe 65.0 kcal/mol; Aff subrl CdSe ' 50.1 kcal/mol. The authors 4uote a paper by N. A. Goryunova (Ref 4), and express their gratitude to Yu. P. Simanov for advice in evaluating the radiograms. There are.1 figure; 5 tablesq and 10 references, 6 of which are Soviet. ASSOCIATIM Hoskovskiy gasudar8tvennyy universitet im. K. V. Lomonosov_,4,-:::~\ -(Moscow state Univer,,tity imeni M. V. Lomonosov) SUB14ITTED: October 6, !q58 ULX Card 2/2 ..67 3 7 eq org) 69047 AUTRORSS Miksimay. T. 1.r Sennankgo 1. N. 8/070/60/005/03/009/048 Isumovat-TplNet BOO4/BOO2 TITLEs Aluminum Acetates.1 PERIODICALs Zhurnal neorganicheekoy khinii, 1960, Vol 5, Nr 3, PP 558 - 564 (USSR) ABSTRACTs After &,brief survey of publications, the authors report on their Investigation of aluminun acetates. They produced aluminuatriseetate from aluminum ethylate %nil acetic anhydride. Al(CK COO) is easily 3 3 soluble in liquid amonia under the development of Al (CY00)3' 3NE 3% During thermal decomposition, the triacetate gradually passes over into di- and nanoacetate (Pigs 192). The data of the radicanalysin taken by *faux of an HKD camera and Pe radiation of the BSV tube are given by table 2. The authors also investigated basic alual acetates.IFrom A1010, plus &attic acid and also from A1C13 plus acetic acid thty obtained the seas coxpound.A1(OR)(CNCOO)2 whose radicanalysis is given in table'l. The basic diacetate has a rhombic,p face-agntred lattice wit the lattice conslants being Card 1/3 a 13.62+0.01 Xt b w 14-401.0 .01 1, a 12.60+0.01 1. On the basis 69047 Aluminum Acetates 5/07OJ60/005/03/009/048 BOO4/BOO2 Of the: density being 10679 a lattice o*11 contains 16 molecules .2hit lest* diaostate- In little.soluble In waterv chloroform and liquid 50 acetone, ether, and liquid 211 and Insoluble In alcohol ammonia., - On the basis of the thersogran Orig 3) taken by z6aw of the. lrurnakov..pyromoter type PI-42, the -formula A' (01) (CR3COO)2 was found to be right# not'A.1 2 O(CH3COO)4 R.O., During the reaction of sadian.acotate (or barium so0ste)-and aqueous solutions of AM 9 3 a basic salt was-obtained whose cospositionla between WORWE COO),.25id and W03)(CM Coo) 2.5%0, and whose radiogram 3 3 2* (Table 2) differ* from that of Al(OR)(CK 3COO)2' The thorzogran of figure 4 shown the water separation of this salt during heating. The nonaqueousealt thus developlugg howeverp radiographically differ* froa-tho salt of free acetic &c1d# despite the -fast st0IQhj0K4trioLCospofitjo ;n., ly the influence of sodium a0etate on aluminum oulphat*, the compound Al(Off)(CR 3COO)2.2-5~20 wad ob- talnod, and during the reaction of sodium aottate and.aluminum nitrate, Al(OR)(CR COO)2 developedl both were radiogriphically 3 'Card 2/5. identified. Aluminum nitrate with acetic anhydride developed a 69047 Aluminum Acetates 5/078/60/005/03/009/048 B004/BO02 compound of varying composition which always contained up to 5% go- # and whose radiogram was identical with that of aluminum tri- 3 &estate. there are 2 figures, 4 tables, and 22 references, 4 of ~which or* Soviet. SDBNITTZDs November 22, 1958 Card 3/3 TMVA* I-Ta., NOTOSMOVA* A.T., SMUMO, K-N. Solubility JA the system beryllium broulde dietherate - other. Zhur. noorg. khis- 5 no.4:941-944 Ap 160. OUM 13:7) 1. Kosk6vskly gamdarstveaM walversitet lia. K. T. Lamonosova. (Beryllium coWtLmds) 206 0 %IOTJ 0411, 1136, 127S 310 6Y36011005100510091021 OKI 11log.l(lri, A051 A029 A AUTAORS, 11ovoselova. A,_T~q Corresponding Member of the USSR Academy of Sciences, Pashinkin, A.S., Candidate of Chemical Sciences, Popovkin, B.A. TITLEs On the Production of Particularly Pure Selenium and Tellurium PERIODICALs Zhurnal Vsesoy-aznogo Khimicheskogo Obahohestva im. D.1. Mendeleyeva, 1960, No. 5P Vol. 5o PP- 55T-562 TEXTs- Seleniumv tellurium and also selenides and tellurides of certain me- tals are used in the produotion of semioonduotors, rectifiers, valys-typs photocells and sensitive ele*tro-photogr&ph,'6c layers, oto Pure selenium is expected to be used in the future In the synthesis of other selanides for luninophorsp photo-res.istors, crystal counters; eto. The semiconductor pro- perties,'of tellurium and tellurides are the subject of intensive studies. In the present article the authors desoribe and comment on the various methods developed for the production of pare selenium and tellurium from Card 1/11 20620 31063160100,5100510091021 A051/A029 On the Production of Particulaxly Pure-Seleni= and Tellurium commercial products. It is mentioned that tho toohnology of selenium and tellurium production from raw materials and their primary purlfioa~ion methods have been described in detail in Soviet literature (Ref.1-4). The main raw material for selenium production are the by-produots of non-ferrous metallurgy plants and of the sulfurio acid production. Commercial selenium Oontains usually up to 98-5 % of the basic substance and admixtures of telluriumq sulfur$ oxygen, arsenic, phosphorusp chlorins2 silicon, sodium# copper, silver, magnesium, cadmium, mercury, aluminum, tin, lead, antimony, bismuth, iron and n.ickel. Penin (Ref.5) studied the effects of admixtures on the electrical properties of selenium rootif4ers. It was found that the admixtures of many metals introduced in the form of selanides in relatively low concentrations (0.1-0.01 at. %) cause a weakening of the rectifying aotion of the rectifiers. Copper and niakel were found to cause a decrease of the rectification ooeffioient. Abdullaye-r and Shapiro (Ref-7, 8) found that the introduction of hallidea (up to 0.15%) and thallium improve the Card 2/11 2062p , 9; S109"'60100,- /005/C09/021 ~IAG29 A051 On the Production of Partioularly P%re Selenium arA.1 Telluriuz rectification charaoteristias. Other Sovi&t asathors, such &a Putseyko (Ref.9), Koslovskiy (Ref.10)g Lukgyano-r (Ref. 11) and ffasiedo,7 (Ref. 12) dealt with the offsets of admixtures on the photo-sens"ivity of selenium photooells. Tho,offects of non-metallio and metallia admixtures on the conductivity of selenium were investigate& in.Ref.13-15- -Foreign admixtures in selenium were found to affect the rate of o:ryetallizatioa of the latter. Alkaline Metals halogens tellurium exd thallium ~ncreaae the z%te of ~3rystalliza- T~ - The of Sel'Zium ia -a;?ed In its purif-loation tion (Ref.16, I 701atility th Ia purifioation of its oompou:.-de (peroxides, hallde3). Other fac- tors used in.this oonneation. are the high rjolability of selenious &aid, ease f its compomd% Ui elementary ealerium.9 I e abIlIty of sele- of reduction of th nium, contrary to tellurium, 'No J*crz varicas addit.1.0-I'a prDluctL;, which decom_ pose under certain conditions foxming pl.,re Other methods are cor, nected with the oxidatiot of oommero7al selenium, p7arifination of the ob- tained peroxide and reduatiun Ito alamsntary ealenium. The 6xidation of com- mercial selenium to peroxide with sulbeequent. sublimation was recommended by, Card 3/11 20620 3/06'~/60/005/005/009/021 AOQII/AO29 On th* Piodwzt-ion of Partioul&rly Pure Solaniuz and Tell-arium Lobanov and Tabunin (Ref.20, 22)~. In R6-' 211 Alakaeyt-,r reports that by a '4 single distillation of aelenisam peroxide Containing 10% of admixtures at 4000C a product oan be obtained noatkining admixture-q of iron 0.0005%, nickel 0.00003%9 copper 0.000-2%. Puzification of selenium peroxide from 4, admixtures of heavy metals is carried vut by precipitat1-or. of these from the lenites. Th's m,3fhdd is also solutions of selonious acid In the form of so recommended for purification from tellurium, the peroxide of which is very poorly soluble 146 water (Ref. 24) - It is suggested th-At seleal-oua acid should be purified by using ion-exchange resins instead of the me thod re- commended in Ref.25-28, which involves the ~,,oprecipitation of admixtures with aluminum hydroxide or iron. hydrGxidej leading to a significant drop in the admixture content of arsenic, antimony, lead, titanium, manganese and silver, but, causing a cer-tain pollutiot by iron and alluminum. By distilling a solution of solenious acid all 37100C a separation of selen-."Lum peroxide from admixtures of tellurium, iron, all=inum., magnesium, eilicon, mercury and arsenic can be ancomplished after oxidizing it to a pentwralarit state (Ret2l). Card 4/11 20620 ,106 J~k/-60/00=/00c/000/021 13 ,05,Amo On the Produ-Ition of Partio-ala,rIT ana Tallnrl:wm One of the simpleet methnds for reda,Ang the I-i_,P'fLed aeleni-am peroxide is the reduction with sulfur 4Iox_I&9 -4.n aciA it-,Alxtion. Other re- duoing agents used are formici aw-.ontuz sulfide%, hydrszine and its de- rivatives. The tenden,:q of selenilara t~,- additi!lu is used in pro- ducing pure selenium. Commaznlal selenium, diafk~7:lve:x tz of ayanide, sulfide or sodium sulfito whea heated, In c.,?ntsI%r.4-Pr a ted qulf4r.!~~ &_-Ad with the following reaotions tsking plal-16-3 So 4- KCN ----* UITSe, Sol Se + N%2 So + H so ss~o 4.'H,,O 2 4 Pure selenium is ther- by d'-sioJ,-~r-Lig ~.-i! the re,-Aultant so- lutions. . The mol.,had for 'l-ho p:!~,du,:tti~nn, ~,-f ploe eelanium 'As one of the moat w4ldely used ix~ the So-riat Uaio;a (Ri;f ~~4, 33). Other ms"hods reoommanded are base& on `ilhs ohlorinat!,oa zf saler!~:,% vith sabaequ6nt hydro- lysis of the ohlor!da Lx, tha ph-eae with vi-rrv_ (Ref. 36) and by thermal decoapos-III.ion of hydrtigot. I~Rf-lkl. ~7~. ThR latter me" 0d is Card 5/1-1 20620 S/063/60/005/005/009/0-21 A051'/A029 On the Producti.--in of Particularly ?ure "d Tall-lartam based an the different tendeac-Aes '4-,~w&r4 h7drat!:,~~ :--f s4iurl"Mm and the ad- 4. mixture elements and the different thaTmal f!f ie~!.anlum hydride and the hydrides of the other elemenig vhivh %re lnrmsd~ Methods invol7itg 4ublima"ion and, diatlliatj!~n a-re w1dely ~isi?d as! methodsi fQ=- purifying asla- nium (Ref.14, 37-40). The beh.&-"L:~r Z)f the dlf.'eren'. aim-.xtu:-req An the sabli- mation pro6ess was stud-wled J.n % avi:-~~or ~7 k,4 R e A". 3 q An in 1., 42),, vestigation was oonducted of the ;;f th4 admllxtixrea of sulfur, thallium and meroury in th-A zones rf -~,,.rdaissat'%on drring the e-'rapora-tion of selenium at 200-275OC- It was fowad that at 25V0 the thsill-;xm, admixture .1 .1 ?7 5' 0 , in aid;i tion to sele- hardly volatilizes at &I*' With aej.S-JW~ bLjt a.4, nium, thallium starts volat-41-1zing It ia po1ntsd out here that the presenoe of mixed moleiules G'L aulfur and aellent-im In the gaseous phase is a great obstay_ale in lwh-3~ of frf~= sullfur admixtuxes at low tempersturea (Ref,43)- distillatien was fciimd to have little effeot in the purifttiatior; nf eeletium from me.rnary al--ixturee (Ref,42). Card 6/11 20620 S/0453/60/0'05/0,05/009/C.2 I .4051,/Arj2g On the Production of Particularly Puze Sslen-;;tm and Tralliarilam- it is suggested to heat selenium in evacuated anroule!~ a. 700 C with aubse- quent sharp cooling 4_n order to purify it c,,f Oxygar. (Ref.40). Pure selenium was obtained in this way with a specifia resistan-f~e in the order of 10-8 ohm4cm. Distillation with so fractionating aolumn was a'-so used for the same purpose.. Zonal liquefaction for pu=ifying selenium, his proven ursucaessful due to.severe ove=aoolln of the 1_117.zi4 sellenium and solidification of it into the vitreous state fRef.36). Kozyrev (Ref.4T) Poinilad out that purifi- oation by the zonal liquefa~;tion method oan glal-& p,~sit-i7e results Under high the latter the rate of is -said 'a in- pressure. in '. 1. crease. In referz!ng to the methodi fo:~ pro!,_t,,' p=,e teliuzium the foinow- ing facts are listeds t6he raw-r-Ater4&JS ?1961 SX& *Ziy_prOduo1g of the non- ferrous aetallurV, pax-tioalarly GlgGtrUyte aoppe,= il-ar_ry. Comme=oiai tellurium usually oontains 95-99 A of the basic siilrste~a3e with a great deal of admixtures of telluxium peroxide, 5elenlaza, sulfixz, ohlorine, sodiums copperp silver, lead, biawath, etc. The Istter are in '%~6 bound state, forza- ing tellurides, oxid6a, chilo-zides. An admIxture of aeleniun forms a solid solution with telluri-am. Pt,.~-e teillurium, i~. i~ael ir~ the semiiaonduot= Card TA 1 1 20620 5/0453/60/00=/005/000 21 A051/AO29 On the Produc;tion of Part!_,ularly Pj-z,e Selan!.un, %ad Tellurium industry for the-production of al'19ya with optim-m thermo-electrioal proper- ties. The works of Ref-46-53 are dedicated to the study Of the affect of various admixtures and activating.additions a~,n the thermoelectrical proper- ties of the alloys. Lead and tin are the most vndeairable &dmixtures in tellurium. Methods.for its puziffioation are physical 9,rd zhemical la na- ture or a combination of both. The ohemic&l methods are based an tha re- orystallizatimor repreoipitaticn of tellurium and its compounds. Re- duction potentials of ietravalle-nt tallur-irm and s!elanium are different and depend on theaoidity of the medium (Ref.29, 541 46). It was shown recent- ly that this method is unsuitable for separating out small admixtures of selenium. Tellurium a%n be purified of heavy metals and selenium by apply- ing the propertiee of the amphoterio Aatura of thg tellurium peroxide and Its low solubility (Ref.24). Tellurium Peroxide �9 P).irified of iron or heavy metals by being dissolved in sodium hydroxide. At a p-H - 10 precipi- tation. of thle hydroxide or that of the tellarites of various compositions is accomplished,(Ref.56, 57). Solovushkov disouseas 'Ln Ref-515 the means by Card 8/11 20620 S/063/60/005/005/009/021 A051/AO29 On the Production of Particularly Pure Selenium and Tellurium which tellurium peroxide can be purified of copper, magnesium, aluminum, leadt antinony,-bismuth, viz., using the low ealubility of tellurium peroxMA In nitrio,apid., TheLpurification of tellurium by recrystallIzation of the compounds is:.used more rarely than other methods at the present time (lief. ar admixtures by 59, 60).: Tellurium can be purified of selenium and sulf, Aelting.with:potaseium cyanide (Ref.64). The physical methods of purifies- tion are considereds the sublimation and distillation of metallic tellurium in,&-,vacuump.distillation in, & flow of hydrogen or of an inert gas, distil- lation-of tellurium compounds, zonal liquefaction and directed 6rystalliza- tion, (Ref-581 652 66). A study of the admixture behavior in vacuum distil- lation has revealed that the chloride admixtures condense in the colder sections of the zone of condenestion- (Ref.66~ 68 and their content in the "In" -ZoneLof condensation can be reduced (Itef.68~ by 300-400 times. The author has established that the Selenium admixture in tolluriumg both in subli"tion-and .distillation, oondenses actually together with tellurium (Ref.70). It~As recommended-that tellurium be chemically purified prior to Card 9/11 W620 S/06.3/60/005/005/009/021 A051/AO29 On the Production of Particularly Pure Selenium and Tellurium vacuum sublimationj in order to eliminate the selenium admixture. However, thelauthors doubt the need for eliminating the selenium admixture in the case of semiconductor manufacture. Sublimation in a hydrogen or inert gas flow is another effective method suggested for purifying tellurium (Ref-71- T3)'. The sublimation and distillation of tellurium aompolmds, like tetra- chloride and peroxide, have only a limited signif4cance (Ref.60, 75, 77)- A high difference in the vapor pressure of the selenium peroxide and the tellurium peroxide could be used for separating tellurium from selenium ad- mixtures (Ref.76)- Due to the complexity of the apparatus needed the re- cently suggested method of tellurium purification.based on the thermal dia- sociatibn~.of tellurium hydride is unpractical. Besides, the letter method would give a low yield of the pure product,viz., 24 % and less (Ref-79). Tellurium is subjected to zonal liquefaction when it is necessary to have a product of the highest purity. This is necessary for research purposes (Ref.83). Zonal liquefaction is uneffective in the case of eliminating selenium and magnesium admixtures (Ref-46, 80). The direct crystallization Card 10/11 31063 '601y(005/005/009/021 A051 rA1029 On the Production of Particulaxly Pure Selenium and Tellu-aium method is-siaple but not very effective when purifying tellurium from ad- mixtures In tho.ardor of 00001 at.% (Ref.63) and selenium admixtures. In conclusion the authars,point oat that a summary of all'the existing methods of purification both in the Soviet Union and other countries has shown that the parent samples of these elements can be obtained by the combination of physical and chemical methods of purification under the condition that the physical methods are need in the last stage. There is I table and 83 re- ferenoest 54 are Soviet, 9 German, 20 Englisho Card 11/11 DOSIXI 1.10; TOROBIMAJ, 0.1.; NGTOSMTA, A.T. **tea L12SO4 - BeSO4 - H20 at Z50. Xhar.amrgAbim. 5 no6iII574162 * 160. OM 13:7) (Lithium sulfate) (Beryllium sulfate) SOSIK, I.I.; TOROBITWA. 0.1.; NDVOSZWVA. A.T. fUsibility in the system L129D,4 - PeSD4 - 10 at 750. Zbur. neorgelddn. 5 no-5:2174-2175 Ky 960. 2 JM 13 *?) (rdthius Adf &'to) (BeryUiuu sulfate) Vitrification in the TeO 2 - Al203 S/0713/60/005/007/043/043/XX System B004/BO60 ASSOCIATIONt Moskovskiy gosudarstvennyy universitst im. M. V. Lomonosova Noacow Stite UnIveraity Imeni M#,' V. Lomonooov) SUBMITTEDs January 28, 1960 Legend to the figures Absorption curve of glasses in the infrared range of the spectrum (thickness of specimens 2 mm), 1) glass with 6% Al 203 and 94% TeO 2 from alundum. crucible, 2) glass of same composition but melted in porcelain crucible. Card 3/3 86488 3/078/60/005/006/021/031/7X 1!51 IT 120 ~i 2401%, B023/Bo66 Turov ff. Vc~~."Novoeqlova".A. V., Semenanko, K.5. TITLZI~ Com0ounds of Beryllium Ohloride,"With Ethers PERIODIPALs Zhurnal neorganicheakoy khimii, 1960, Vol. 5, No. St ppv.-1705-1709 T'ZkTt The authors report on their synthesis and investigation of new compounds of beryllium chloride..with dimethyl etherg dibutyl ether, tetrahydropyran, _and ethylene glycol dimethyl other (1,2-dimethoxy-ethane). The-following rules wereestablished: 1) The thermal stability of beryllium chloride complexes with ethers of monovalent radicals increases rapidly on transition of compounds of the aliphatic series to cyclic ethers. 2),Themelting point.of BeCI 2# 2R20 (R - alkyl radical) decreases con- siderably in the -homologous series of aliphatic ethers (at R = CH C H 3f 2 50 n-C4 H9 the melting point is 630 ' 430, and