Synthesis and structures of Cs/sub 2/TaSe/sub 4/ and Cs/sub 3/NbSe/sub 4/
Journal Article
·
· J. Solid State Chem.; (United States)
A study of the alkali metal tetraselenometalate system has afforded two new isostructural phases, Cs/sub 3/TaSe/sub 4/ and Cs/sub 3/NbSe/sub 4/. The structures of these phases have been determined by X-ray and neutron powder diffraction techniques. Cs/sub 3/TaSe/sub 4/ crystallizes in the orthorhombic system (D/sub 2h//sup 16/-Pnma, a = 10.277(1), b = 11.918(1), c = 10.238(1) A) with four formula unites in the cell. The structure contains discrete TaSe/sub 4//sup 3 -/ ions (Ta-Se, 2.369(4), 2.374(7), 2.397(6) A) and Cs/sup +/ cations. Out to 4 A the Cs cations are surrounded by five or seven Se atoms.
- Research Organization:
- Northwestern Univ., Evanston, IL (USA)
- OSTI ID:
- 6870306
- Journal Information:
- J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 76:1; ISSN JSSCB
- Country of Publication:
- United States
- Language:
- English
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·
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·
OSTI ID:6566257
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
CESIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL PREPARATION
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DATA
DIFFRACTION
EXPERIMENTAL DATA
INFORMATION
LATTICE PARAMETERS
NEUTRON DIFFRACTION
NIOBIUM COMPOUNDS
NIOBIUM SELENIDES
NUMERICAL DATA
ORTHORHOMBIC LATTICES
PHASE STUDIES
REFRACTORY METAL COMPOUNDS
SCATTERING
SELENIDES
SELENIUM COMPOUNDS
SPACE GROUPS
SYNTHESIS
TANTALUM COMPOUNDS
TANTALUM SELENIDES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
CESIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL PREPARATION
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DATA
DIFFRACTION
EXPERIMENTAL DATA
INFORMATION
LATTICE PARAMETERS
NEUTRON DIFFRACTION
NIOBIUM COMPOUNDS
NIOBIUM SELENIDES
NUMERICAL DATA
ORTHORHOMBIC LATTICES
PHASE STUDIES
REFRACTORY METAL COMPOUNDS
SCATTERING
SELENIDES
SELENIUM COMPOUNDS
SPACE GROUPS
SYNTHESIS
TANTALUM COMPOUNDS
TANTALUM SELENIDES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION