Published March 2003 | Version v1
Journal article Metadata-only

Crystal structure of double vanadates LiCoVO4 and Li0.5Co1.25VO4

Creators

  • 1. UrO RAN, Inst. Khimii Tverdogo Tela, Ekaterinburg (Russian Federation)
  • 2. UrO RAN, Inst. Fiziki Metallov, Ekaterinburg (Russian Federation)

Description

The LiCoVO4 (1) and Li0.5Co1.25VO4 (2) crystalline structures are studied through the methods of the X-ray beams and thermal neutron powder diffraction. It is established that the greater part of vanadium and small quantity of lithium occupy the tetrahedral positions 8a in the cubic vanadate 1, whereas the whole cobalt, lithium and small portion of vanadium occupy the octahedral positions 16d. The vanadate 2 is crystallized in the rhombic syngony with the elementary cell parameters: a = 5.939(1), b = 5.810(1), c 8.303(1) A. The tetrahedral positions 4e are completely occupied by vanadium and lithium at the ratio 0.92 / 0.08. The interatomic distances in 1 and 2 are calculated and the channels dimensions for the lithium ions transfer are evaluated

Abstract (Russian)

Методами порошковой дифракции рентгеновских лучей и тепловых нейтронов изучены кристаллические структуры LiCoVO4 (1) и Li0.5Co1.25VO4 (2). Установлено, что в кубическом ванадате 1 большая часть ванадия и небольшое количество лития занимают тетраэдрические позиции 8а, а весь кобальт, литий и немного ванадия заселяют октаэдрические позиции 16d. Ванадат 2 кристаллизуется в ромбической сингонии с параметрами элементарной ячейки: a 5.939(1), b = 5.810(1), c = 8.303(1) A. Тетраэдрические позиции 4е полностью заняты ванадием и литием в соотношении 0.92 / 0.08. Рассчитаны межатомные расстояния в 1 и 2, оценены размеры каналов для переноса ионов лития

Additional details

Additional titles

Original title (Russian)
Кристаллические структуры двойных ванадатов LiCoVO

Publishing Information

Journal Title
Zhurnal Strukturnoj Khimii
Journal Volume
44
Journal Issue
2
Journal Page Range
p. 277-281
ISSN
0136-7463
CODEN
ZSTKAI

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
36038128
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
CHEMICAL COMPOSITION; COBALT COMPOUNDS; CUBIC LATTICES; INTERATOMIC DISTANCES; IONIC CONDUCTIVITY; LATTICE PARAMETERS; LITHIUM COMPOUNDS; NEUTRON DIFFRACTION; ORTHORHOMBIC LATTICES; VANADATES; X-RAY DIFFRACTION
Descriptors DEC
ALKALI METAL COMPOUNDS; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIFFRACTION; DISTANCE; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SCATTERING; TRANSITION ELEMENT COMPOUNDS; VANADIUM COMPOUNDS

Optional Information

Notes
9 refs., 2 figs., 3 tabs.