Structure of the copper(I) tantalum oxide, Cu/sub 5/Ta/sub 11/O/sub 30/
The structure of hexagonal CU/sub 6/Ta/sub 11/O/sub 30/ (space group P62c) has been determined from single-crystal diffractometer data. The cell dimensions are a = 6.2297(2) angstrom and c = 32,550(2) angstrom, and the cell content is two formula units. The structure is related to those of CaTa/sub 4/O/sub 11/ and CeTa/sub 7/O/sub 19/ and contains alternately single and double layers of TaO/sub 7/ pentagonal bipyramids sharing edges in the equatorial plane in the same way as UO/sub 7/ in ..cap alpha..-U/sub 3/O/sub 8/. The layers are connected by TaO/sub 6/ octahedra and linear CuO/sub 2/ groups, both formed by the apex oxygens of the TaO/sub 7/ bipyramids. Refinement was made with the least-squares technique using 729 reflections, of which 422 were independent. The conventional R value was 3.9%.
- Research Organization:
- Univ. of Stockholm, Sweden
- OSTI ID:
- 5225996
- Journal Information:
- J. Solid State Chem.; (United States), Vol. 41:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COPPER OXIDES
CRYSTAL STRUCTURE
TITANIUM OXIDES
DIFFRACTOMETERS
EXPERIMENTAL DATA
INTERATOMIC DISTANCES
PARAMETRIC ANALYSIS
STEREOCHEMISTRY
VERY HIGH TEMPERATURE
CHALCOGENIDES
COPPER COMPOUNDS
DATA
DISTANCE
INFORMATION
MEASURING INSTRUMENTS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties