Crystal structure of (Mo,W){sub 9}O{sub 25}, homologue of the Mo{sub 4}O{sub 11} (Orthorhombic)-type structure
- Moscow State Univ., Moscow (Russian Federation)
- Stockholm Univ. (Sweden)
The structure of Mo{sub 7.6}W{sub 1.4}O{sup 25} has been determined from single crystal X-ray data. The symmetry is monoclinic with lattice parameters a = 5.448(1), b = 27.639(8), c = 6.739 (1) {angstrom}, {beta} = 90.180(9){degrees}, and space group P2{sub 1}/n. The refinement led to R = 0.046 for 2060 observed unique reflections. The Mo:W ratio was confirmed by microanalysis. The (Mo, W){sub 9}O{sub 25} structure is built up of cornersharing distorted MO{sub 6} octahedra in slabs of ReO{sub 3}-type, cut parallel to (211) and seven octahedra wide along two subcell axes. The slabs appear alternatively in mirrored orientations. The slabs are mutually linked by corner sharing of fairly regular MoO{sub 4} tetrahedra so that five-sided tunnels are formed. High-resolution electron microscopy images showed well-ordered crystal fragments.
- OSTI ID:
- 237549
- Journal Information:
- Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 119; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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