Abstract
A study of the alkali metal tetraselenometalate system has afforded two new isostructural phases, Cs3TaSe4 and Cs3NbSe4. The structures of these phases have been determined by X-ray and neutron powder diffraction techniques. Cs3TaSe4 crystallizes in the orthorhombic system (D162h-Pnma, a = 10.277(1), b = 11.918(1), c = 10.238(1) Å) with four formula units in the cell. The structure contains discrete TaSe3-4 ions (TaSe, 2.369(4), 2.374(7), 2.397(6) Å) and Cs+ cations. Out to 4 Å the Cs cations are surrounded by five or seven Se atoms.
Original language | English (US) |
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Pages (from-to) | 109-114 |
Number of pages | 6 |
Journal | Journal of Solid State Chemistry |
Volume | 76 |
Issue number | 1 |
DOIs | |
State | Published - Sep 1988 |
Funding
This research was supported by the National Science Foundation Grant CHE 87-01007T. he IPNS facility at Argonne National Laboratory is supportedb y the U.S. Department of Energy. We thank Drs. F. Rotella, J. Richardson, and R. Hitterman of Argonne National Laboratory for many helpful discussions.W e are also indebted to Mr. Nathaniel Brese for initial indexing of the X-ray powder patterns.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry