SCIENTIFIC ABSTRACT DVORYANKIN, V.F. - DVORYANSKAYA, N.V.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000411630011-4
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 65
• Document Creation Date: November 2, 2016
• Document Release Date: August 25, 2000
• Sequence Number: 11
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

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--.rie -alle
a maximum at 0, 2 n
--f; T

SOV/70-3-4-20/26
AtJTHORS: D y o zy V-F. and Vaynshteyn, B.K.
ADU 4..L~
TITLE: A Low-temperature 6iystal Holder for the Electronograph'EG
(Nizkotemperaturnyy kristalloderzhatell dlya elektronografa
EG)
PERIODICAL: Kristallografiya, 1958, Vol 3, Nr 4, PP 504-506 (USSR)
ABSTRACT: A crystal holder attachment for the.standard EUG horizontal-
beam electronograph of the Institute of Crystallography
is described which can enable a specimen grid to be cooled
to liquid temperature (with drawing). The grid holder
is at the eld of a tubei'which can be filled with liquid
142, protruding into the specimen space. The channel
through which the beam passes along the axis of the instru-
ment can be rotated about the cooling tube to cut off the
beam which may heat the specimen very noticeably. The
cooling tube entering the camera is surrounded by a double-
walled screen also entering the camera which'can also be
filled with liquid N2 to act as a guard tube. The copper
crystal holder is itself surrounded, except for-entrance and
outlet -apertures, with a copper box connected to the cooled
guard tube. Operation without a guard tul)e proved
Card 1/2

SOV/70-3-4-20/26
1, Low-temperature Crystal Holder for the Blectronograph EG
unsatisfactory. A Cu-constantan thermocouple is provided
to measure the specimen temperature. The mechanism by
which the specimen carrier can be moved is, except for
rotation about the tube, mentioned but not described. It
is recommended that a cold trap immediately above them'
pump should also be fitted as otherwise any condensible
vapours will contaminate the specimen slightly in spite of
the guard chamber. Specimen pictures from NH,,Pr phases
(II) and (111) are reproduced.
There are 7 references, 3 of which are Soviet, 1 in
English and 3 Scandinavian.
ASSOCIATION: Institut kristallografii Aii SSSR
(Institute of Crystallography of the AC.L9C-USSR)
SUBMITTED: May 12, 1958
Card 2/2

AUTHOR: D=o~~ -vap. sov/70-4-3-32/32
1 1~10 ~
TITLE: Low-temperature Methods in Electronography
PERIODICAL: Kristallografiya, 1959t Vol 4, Nr 3, pp 441-459 (USSR)
ABSTRACT: Comprehensive review of foreign and Soviet work.
Various experimental arrangements for examining specimens
at low temperatures (liquid air) are described and
illustrated. The examination of thin metal films
evaporated onto a cold substrate is described. Super-
conductors examined at liquid helium temperature are
discussed and work on the structure of hexagonal and
cubic ice is reviewed at length. It is concluded that
the use of low temperatures in clectronography signifi-
cantly widens the region susceptible to electron diffraction
techniques and is suitable for the solution of the
following problems:
1) Study of first- and second-order phase transitions in
th--*n films at low temperatures.
2) Determination of the structure-s of thin metallic and
non-metallic layers obtained by condensation on a cooled-
CarCU/3 substrate.

SOV/70-4-3-32/32
Low-'temporature Methods in Electronography
3) Elucidation of the dependence of the phYsical
properties of thin films~ on their structures, which may
change with changes in the temperature of the condensation
surface.
4) Investigation of the structures of super-conducting
films of metals and alloys.
5) Determination of the structure of ice, obtained by
condensation of water vapour on a cooled substrate, and
also the investigation of the character of ice deposita
as they depend on the tot;iperature and nature of the
substrate. Probably it will be possible to study the crystal
structures of other liquids by condensing their vapVrs
onto cold substrata.
6) Study of the thermal vibrations of atoms.
7) Studies of the influence of temperature on the
structures of polymers.
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SOV/70-4-3-32/32
Low-temperature Methods in Electronography
There are 13 figures, 6 tables and 105 references, 18
of which are Soviet, 7 international, 56 English, 1 Japanese,
2 Dutch, I Swedish, 1 Nonfegian, 1 Czech, 17 German and
1 Swiss.
ASSOCIATIONS: Institut kristallografil AN SSSR (Institute of
Crystallography of the Ac.Sc., USSR)
Sibirskoye otdelenlye AN SSSR (Siberian Branch of the
Ae.Sc., USSR)
Institut neorganicheskoy khimii(Institute of Inorganic
Chemistry)
SUBMITTED: February 19, 1958
Card 3/3.

24.2000 77123
SOV/70-4-6-24/31
AUTHOR: Dvoryankin, V. F.
TITLE: Electron Diffractional Detection of Phase Transition
in Thiourea at Low Temperatures. Brief Communications
PERIODICAL: Kristallografiya, 1959, vol 4, Nr 6, pp 925-926 (USSR)
ABSTRACT: Electron diffraction photographs of oblique texture type
from a thin thiourea specimen were taken at different
temperatures and compared in order to study a phase
transition from paraelectric to ferroelectric in thiourea
atu different temperatures. A low-temperature crystal
holder was used. (V. F. Dvoryankin, B. K. Vaynshteyn,
Kristallografiya, 3, 5, 504, 1958). The electron dif-
fraction pictures of thiourea specimens at room tempera-
ture (before cooling) and at low temperature, -14o0 c
(after cooling) were taken on the same photographic
plate. For the unit cell of thiourea at +200 C, the
following measurements were obtained: a = 5.52 A,
b = 7.65 A, c = 8.53 A; the space group D10 = Fbnn.
Card 11,11-2 2h

Electron Diffractional Detection of Phase 77123
Transition in Thiourea at Low Temperatures. sov/70-4-6-24/31
Brief Communications
For the low-temperature phase of thiourea (-140' C)
the measurements of unit cell are: a 5.4
~ .9 A,
b = 7.58 A, c = 8.58 A; space group C.2 It can be
2v
assumed that the phase transition from paraelectric
into the ferroeledtric in thiourea Is determined
ether by the molecules' displacement, by rotation of
amino groups, or by both. The author expresses his
gratitude to B. K. Vaynshteyn for the supervision of
this work. There is 1 figure; and 7 references,
1 U.S., 2 U.K., 1 German, 3 Soviet. The U.S. and
U.K. references are: N. R. Kunchur, M. R. T'ruter,
J. Chem. Soc., 2551-2557, 1958; A. L. Solomon, Phys.
Rev., 104, 1191, 1956; J. W. Ensley, A. S. Smith,
Proc. Chem. Soc., 53, 1958.
ASSOCIATION: Institute of Crystallography of the Academy of Sciences
USSR and Institute of Inorganic Chemistry of the
Siberian Branch of the Academy of Sciences USSR (Insti-
tut kristallografii AN SSSR i Institut neorganicheskoy
khimii Sibirskogo otdeleniya AN SSSR)
SUBMITTED: July 19, 1959 Card 2/12

DvoraMM) V. P. VAINSHTEIN,, B. K.
"ifsQW3. Electron Diffraction Investigation of Thiourea at 200 C. and --140'c."
paper submitted for 5th Gen. Assembly, Symposium on Lattice Defects, Intl. Union of
Crystallography, Cambridge 'U.K. Aug 196o.

DVORYAFMN. V.F.- VAYN&PfArN. B,K,
Rectron diffraction study of thiourea. Aristallograftia 5 no.4:
589-599 ii-Ag 160. (MIRA 13:9)
1., Institut kristallografii AN SSSR i Institut neorganicheskoy khimii
SAbirskogo otdeleniya AN SSSR.
(Urew;-Diffraction)

DVORYANKIN, V.F.
. SOPMA conference on the use of electronic calculating
machines"In the structural analysis of crystals. Zhur.strukt
khim. 2 ho-4:518 Jl-Ag 161. WMA 14:9)
(Electronic calculating machines-Congresses)
4

14.22_DZ) 116o 11164 11'~7 30174
151091 S/07o/6i/oo6/oo6/oo6/oo8
E132/E135
AUTHORS: Dvoryankin V F and Vaynshteyn, B.K.
TITLE: An electron diffraction study of the structure of the
low-temperature ferroelectric phase of thiourea
PERIODICAL-. Kristallografiya, v 6, no.6, 1961, 949-959
TEXT: G.J. Goldsmith and J.G. White (Ref-73 J. Chem. Phys.,
Vol-31, 1175-1187, 1959) have shown that there are 5 phases of
thiourea: I ferroelectric (f.e.) up to 169 OK; II anti-
ferroelectric (a.f.e.) 169-176 OK; III f.e. 176-18o OK;
IV a.f.e. 180-202 OK; V a.f.e. above 202 OK. They also found
the positions of the heavy atoms in phase I by X-ray methods
simultaneously with the present authors who used electron
diffraction methods. A detailed structural study at 133 OK has
now been made, (Ref.6: Kristallografiya I Vol 4, 6, 925, 1959).
The unit cell has th -oup Pb2 m
e space gr C Z =_4
I 2v wl
and much the same dimensions as at room temperature, although the
space group then is D16 Oblique texture photographs were
taken at ft
133 OK and spo intensitieswere measured to about 15%
Card 1/3

30174
An electron diffraction study of the ... S/07o/61/oo6/oo6/oo6/oo8
E132/E135
for 6 layer lines. 250 reflexions were measured (188 at room
temperature). Phases were calculated for a trial structure
including H atoms. Corrections for dynamic effects were
necessary. An anisotropic temperature factor was introduced and
a reliability factor of 18% was finally obtained. Various
Fourier sections, projections and difference syntheses were
constructed. Coordinates of the atoms were found from these and
are compared with those of Goldsmith and White who only estimated
the H positions from standard,bond lengths and angles. The
correspondence is very close. The H-bonding system and the
nature of the ferroelectric transition are discussed. on the
basis of the non-planarity of the molecules when ferroelectric
mechanisms are suggested for the phases II, III and IV.
Acknowledgments are expressed to F.A. Brusentsov for his -
assistance. Z.V. Zvonkova and Yu. Tashpulatov are mentioned in
connection with their contributions to the study of the structure
of thiourea,
There are 7 figures, 2 tables and 23 references: 11 Soviet-bloc
and 12 non-Soviet-bloc. The four most recent English language
Card 2/3

30174
An electron diffraction study of the... S/07o/61/oo6/oo6/oo6/oo8
E132/E135
references read as follows:
Ref- 7: as in text above.
Ref.13: G.A. Jeffrey, R. Shino. Acta crystallogr., Vol.121
447-455, 1959-
Ref.19: Costain, Downing. J. Chem. Phys.9 Vol-329 158, 196o.
Ref.23: Chlbas M. Toyama, I. Morino. J. Phys. Soc. Japan,
Vol. 14, 379-380, 1959.
ASSOCIATION: Institut neorganicheskoy khimii Sibirskogo otdeleniya
AN SSSR (Institute of Inorganic Chemistry, Siberian
Filial AS USSR)
Institut kristallografii AN SSSR (Institute of
Crystallography, AS USSR)
SUBMITTED: August 18, 1961
Card 3/3

1:1,tto lilt kigqv 27877
S/020/61/140/001/013/024
~104/B109
AUTHORS. Vaynshteyn, B. K., and Dvoryankin, V. F.
TITLEt Mechanism of a ferroelectric phase transformation in
thiocarbamide at 1330 K
PERIODICALt Akademiya nauk SSSR. Doklady, v. 140, no. 1, 1961, 111-114
TEXT: The character of C - S bond in thiocarbamide (Vq~(NH 2)2 ) has been
studied repeatedly. In previous papers the authors described structural
analyses of thiocarbamid6 by means of electron diffraction studies.
(Kristallografiyaq A, 925, (1959); ~, 589 (1960); .~~ 504 0958)). Similar
studies were made by G. J. Goldsmith et al. (J. Chem. Phys., 31, 1175
(1959)) who proved the existence of five phases. Using the terminology
introduced by Goldsmithq the authors proved a phase transition at 1330 K
in the ferroelectric phase I which exists below 1690 K. In the anti-
ferroelectrie phase V which exists above 2010 K they electronographically
localized the position of a hydrogen atom. The structural formula of
Carcl 1/4.

27877
S/020/61/140/001/013/024
Mechanism of a ferroelectric ... B100109
phase V of thiocar'baTicle which is shown in Fig. 1 is discussed at length.
A threedimensional representation of the potential levels is made for
exactly determining the hydrogen atoms.in the phases I and V. It could
be proved for both phases that the HII atom does not lie in the same plane
as the other heavy atoms. It is suspected that in all five phases of - /I
thiocarbamide this hydrogen atom does not lie in the plane of the other
atoms. In a detailed study of the structural change of thiocarbamide in a
ferroelectric phase transition it is demonstrated that the ferroelectric
properties of phase I result from the unevenness of its molecule and from
the formation of strong hydrogen bonds at low temperatures. The molecules
of phase I are less symmetric than those of phase V. Finally, the authors
discuss possible variants of the structure of the phases II, IIIp and IV
of thiocarbamide. Z. V. -Zvonkova and Yu. Tashpulatov (Kristallografiya,
1, 'j53 (1958)) are mentioned. There are 3 figures and 16 referencest 7
Soviet and 9 non-Soviet. The references to English-language publications
real as.follows:
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27877
3/020/61/140/001/013/624
Mechanism of a ferroelectric ... B104/B109
N. R. Kunchur at al., J. Chem. Soc., 1958, JulY (517), 2551; P- Vaughan,
et al., Acts, CrYst- i ~, 532 0954); H- J. Grenvill--,.-,Iells, Acta* Cryst.,
709 (1956); J.vl. Emsley*at al., Arch. Sci.j 12f 122 (1959)-
ASSOCIATION: Institut kristallografii Akademii nauk SSSR
(Institute of Orystallography of the Academy of Sciences
USSR)
Institut neorganicheskoy khimii Sibirskogo otdeleniya
Akademii nauk SSSR
(Institute of Inorganic Chemistry of the Siberian Department
of the Academy of ScienGes USSR)

DVORYANKIN, V.F 0
I
Diseartati*n defended for the degree of Candidate of PhysicomtLexattrAl
Sciences at the Institute of Crys W lography In 1962:
"Blectronographic Structual Investigation of Sigh-Temperature and
Low-Temperature Thiourea Phases."
Vest. Akad. Nauk:5SSR. No. 4, Moscow, 1963, pages 119-145

Iff OMMIfir V.F.; BRUSENTSX7. F.A.
.iCorrectiono to normal equations in the least squares metbod for more
accurate definition of crystalline structures. Kristallografiia 7
n%6.*954-956 N-D 1~2. (MIRA 16-4)
1. Institut noorganicbeskoy khimii Sibirskogo otdeleniya AN SSSR*
(Least squares) (Differential equations)

BRUSENTSEVp F,A*; DVORYANKINg. V.F.
Analytical repreaentzition of the atomic factors of scattering
for electrons. Kristallograftia, 8 no.2:260--263 Mr-Ap 163.
(MIRA 17:8)
1. Institut neorganicheskoy khimii Sibirskogo otdeleniya AN SSSR.

. - :~ U - v I i I P!,L p L ~ U~ ~- - , , -..- . .- - - - - - - - - -
f~-
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m
t
r

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ACCESSION M 04012272 S/0070/64/009/00110020/00'25
KUTHOR: Dvqryankin., V. F.
TITLEt The effect of thermal movefiient of atom3 on the distribution of the atomic
potential
L
SOURCE: Kristanografiya, ve 9j, no. 1. 1964j, 20-25
TOPIC TAGS: . thermal movement, atomic the=4 movement., atomic p#ential.,
potential distribution, Fourier transformatign,, hydrogen
ABSTRACT : Strong thermal movement of atoms sometimes makes it impossible to
locate precisely the position of atops or, qven more, to determine their electron
states. Because of this an investigator is irorced to use a low-tgmperature
technique. In knowing how thermal dovement 'iffects the potential'distributioa of
an atom, however, one may define the approximate optimal experimental levels at
which the position of the atom may ~e determined and its electronstate ascertained.
To compare theoretically computed with experimental distribution, it is necessary
to consider the effect of a break i~'the Fo~rier series* In this study the author
-h.as examined the effect of thermal movement on distribution of potential both with
Card 1/2

A
L
ACCESSION NR: AP4012272
consideration of the break in the Fourier sepies and without consideration of the
break. The first, which is found td be essAntial, yields a distribution function
that may be written
IT, (0) 1br == (D (X=ab00 bit
D w exp
2 87r2
where D(t) - 4 71r (r), r to b ~ I and X sin 0 The author then
applies this function to the speci.fieBexample of the hy%rogen atom* Origo art-*
hass 35 formulas.
ASSOCIATION: Institut neorganicheskoy khimii Sibirskogo otdoleniya AN SSSR (In3ti-
tute of Inorganic Chemistry Siberian Department AN SSSR)
SUB11-UTTED % 15Apr63 DATE AGQ2 lqFeb64 E14CL: 00
SUB CODE: PH NO REF SOV 1 005 OTHER: 003
Card 2/2

ACCES67W N01 AW,012'273 8/0070/6tt/009/001/0026/0031
AM-110,:S: lhwryrtnki~r~i. F.; Kolorniychuk#'.V. Hf,
'2111'Pj: The affect of thermal movement of the hydrogen atom on the distribution of
its pot~rxtial
SOUAC'2j: Kristallodraf iya, v. 9, no. 1, 1964p 26-31
TOPIC TAGS- thermal movement, potential distribution, atouio thermal movement,
hydrogaii thermal movement, hydrogen potential
ABSTRACT: This is a completion of V. P. Dvoryankin's immediately preceding article
(Kris tallograf Iya, 9, 1, p. 20, 1964). - The authors have used the:.Vunction for
distribution of potential for the hydrogen atom derived,in the indicated paper, and
they have made computations for different values of the isotropic temperature
factor and different values.of tsin 01
The results are presented in several
long tables. Prom these results thb authors conclude that isotropic thermal move-
ment of a hydro-en atom clearly affects its distribution of potential. With
01 increase in the temperature factor, there occurs, first, a decline in the distri-
bution function and, secondly, a "smearing" of the potential. Concerning the
Card 1/2

AUCSSSION NOt AP4012273
break in the Pourier series, this clearly affects the distribution of potential
also. Vith increase in the temperature factor# the effect of this break declines..
Decrease in temperature factor leads to increased distortion of the potential
distribution, and diminution.in the break may occur at lower temperatures. Cooling
a sample, therefore, causes decrease in value of the temperature factor and incree-cle
-in the value of (S
The problem lies in 3electing the optimal conditions.
Orig. art. has: 2 filsureso 4 tables, and 7 formulas.
ASSOCIATION: Institut neorganicheskoy khimii.Sibirskogo otdeleniya AN SSSR
(Institute of Inorganic Chemistry Siberian Department AN SSSR)
SUBMITTED: 15Jun63 DATE ACQ: 19M& ad, 00
SUB CODEx PH NO REP SOTs 004 OTMI 004
Card 2/2

KOIA)MIYOMI V.N.,-_RVORTL
Electron diffractiod deternination of,the position of hydrogen
atoms in HH4Br. Kristallograftia 9 no.1:50-56 Ja-P 164.
f I (MIRAL 17:3)
1, Institut neorganicheskoy khimii Sibirskoga otdolenlys, AN SSSR.

ACCESSION NR-. AP4024984 S/0070/64/009/002/m67/017()
AUTHORt Dv-3ryankin, V,,
TITLE: Analytical representation of 'the integral character'isties foe distribution.
of electron density and potential in atoms
SOURCE: Kristallografiyas V. 9, no. 2p 1964, i67-17o
TOPIC TAGS: atomic factorp atomic factor curvej, analytical representation, elec-
tron densityp distribution density,, potential distribution) integral characteris-
tic
s cattetirg
ABSTRACT: The author begins with two basic expressions for analytical representa-,
tion of.curves for atomic factors in scattering:
(x) Tj At ex~ 6i;;7
Av k
(z) a,. e.
(2)
Cam 1/2

ACCESSION NRt AP4024984,
In these formulas, x - An G/A and tfie corresponding coefficiints are comiated
by the method of least 6quares. On thi basis of these formulas and on the basis
formulas for computing integral charac~eriatics., the author has obtained analyt4-
Cal representation for the integral characteristics. These characteristics for
scattered material.in atoms and for continuous and discontinuous Fouiier series
are designated 0 Ekpre4sions are then obtained for these two for
n ;60 and on dis
all values of n from 1 to B. Orig. art'* bass 19 formulas*
n
ASSOCIATION: Institut neorganicheskoy khim:Li Sibirskogo, oltdalaniya AN SSSR
(Institute of InorganiorMemistrys Siberian 'Divislon',AH SSSR,
sumiTTED: 15Apr63 DATE AcQ:. iapr64 ENCL: 00
SUB CODE: PH NO Ra SOV: 003 OTM: 006
2,12
Card

DVORYANKINJ, V.F.; BRUSE11TSEV, F.A.
Modification of the method of least squares in the structural
.analysis of crystals. Kristallografiia 9 no-4:548-550 JI-Ag
164. (MIRA 17:11)
1. Institut neorganicheakoy kbimii Sibirskogo otdeleniya AN SSSR.

~ -; -1~- -, - 1 1 ~. - - * . . . .

- : * ~ I " !
--- ---- -- -

SOBOLEV, Ya.V.; BOKIYI GB,; LISOrVAN, VI.,- DVORYANKIN, V.F.
Natura of extra refled;ttons of the "tericail ty-pe on laus diffraWon
patternB of natural diamonds. Zhur, struke khims 6 no,33468-40
My-Te f65. (KMA IM)
1, Irstitut neorganIchaskoy khImli Sibir.4kogo otdolenlya AN SSSR I
institut radlotakhniki AN SSSR,

K.I.; IWORYMIXIN, v4F.
Dc--a-maination ol" the ru'rztz-ucruro rZ. t;_.--j.-1. fA-21-1- ir,
ii'.frractoion ipmthod, lava zlO AN b"il-11 vo*7 iti~mo t~~
!-Ina:?;6~-70 165a k ~;~, i -,,~ -. *...