Structures of double molybdates TlR(MoO4)2 (R = In, Sc, Fe, Cr, Al)
Creators
- 1. Buryatskij Gosudarstvennyj Univ., Ulan-Udeh (Russian Federation)
- 2. Moskovskij Gosudarstvennyj Univ. im. M.V. Lomonosova, Moscow (Russian Federation)
- 3. Inst. Novykh Uglerodnykh Materialov i Tekhnologij, Moscow (Russian Federation)
- 4. SO RAN, Bajkal'skij Inst. Prirodopol'zovaniya, Ulan-Udeh (Russian Federation)
Description
Structures of double molybdates TlR(MoO4)2 (R = In, Sc, Fe, Cr, Al) are studied. The crystal structures are determined from single-crystal and powder (Rietveld method) X-ray diffraction data. Low-temperature TlR(MoO4)2 (R In, Sc, Fe, Cr) phases crystallize in orthorhombic crystal system (space group Pnma, Z=4) and can be classified as framework structures. Thallium cations coordinated by eleven oxygen atoms are located in the cavities of the framework, which is built of octahedra RO6 and tetrahedra MoO4 . Layered TlAl(MoO4)2 compounds and the high-temperature TlSc(MoO4)2 crystallize in trigonal crystal system (space group P3-bar m1, Z = 1). The layers are formed by octahedra RO6 and tetrahedra MoO4 , and the Tl cations (coordination number 12) are arranged in between
Abstract (Russian)
Изучено строение двойных молибдатов TlR(MoO4)2 (R = In, Sc, Fe, Cr, Al). Кристаллические структуры определены по монокристальным и порошковым (метод Ритвельда) данным. Низкотемпературные соединения TlR(MoO4)z (R = In, Sc, Fe, Cr) кристаллизуются в орторомбической сингонии (пр.гр. Pnma, Z = 4) и относятся к каркасному типу. Катионы таллия, координированные одиннадцатью атомами кислорода, располагаются в полостях каркаса, построенного из октаэдров RO6 и тетраэдров MoО4. Слоистые ТlАl(МоO4)2 и высокотемпературный TlSc(MoO4)2 кристаллизуются в тригональной сингонии (пр. гр. РЗm1, Z = 1). Слои образованы октаэдрами RO6 и тетраэдрами МоO4, катионы Tl (КЧ =12) располагаются между слоямиAdditional details
Additional titles
- Original title (Russian)
- Строение двойных молибдатов TlR(MoO
Publishing Information
- Journal Title
- Zhurnal Neorganicheskoj Khimii
- Journal Volume
- 50
- Journal Issue
- 4
- Journal Page Range
- p. 667-677
- ISSN
- 0044-457X
- CODEN
- ZNOKAQ
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- Russian Federation
- INIS RN
- 36060685
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- ALUMINIUM COMPOUNDS; CHEMICAL COMPOSITION; CHROMIUM COMPOUNDS; COORDINATION NUMBER; CRYSTAL LATTICES; INDIUM COMPOUNDS; INTERATOMIC DISTANCES; IRON COMPOUNDS; LATTICE PARAMETERS; MOLYBDATES; SCANDIUM COMPOUNDS; THALLIUM COMPOUNDS; X-RAY DIFFRACTION
- Descriptors DEC
- COHERENT SCATTERING; CRYSTAL STRUCTURE; DIFFRACTION; DISTANCE; MOLYBDENUM COMPOUNDS; OXYGEN COMPOUNDS; REFRACTORY METAL COMPOUNDS; SCATTERING; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- 35 refs., 8 figs., 9 tabs.