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β-Nb9VO25.
- Source :
-
Acta crystallographica. Section E, Structure reports online [Acta Crystallogr Sect E Struct Rep Online] 2014 Apr 16; Vol. 70 (Pt 5), pp. i20. Date of Electronic Publication: 2014 Apr 16 (Print Publication: 2014). - Publication Year :
- 2014
-
Abstract
- The title compound, nona-niobium vanadium penta-cosa-oxide, was prepared by a solid-state reaction at 1198 K. It is isotypic with Nb9AsO25, Nb9PO25 and Ta9VO25. The structure consists of NbO6 octa-hedra (one with 4/m.. and two with m.. symmetry) and VO4 tetra-hedra (-4.. symmetry) sharing corners and edges to form a three-dimensional framework. This framework can be considered as a junction between ribbons made up from NbO6 octa-hedra and chains of NbO6 octa-hedra and chains of VO4 tetra-hedra. The V site shows half-occupancy, hence one half of the VO4 tetra-hedra is unoccupied. The structural differences with α-Nb9VO25, VOSO4, SbOPO4 and NbOPO4 oxides are discussed.
Details
- Language :
- English
- ISSN :
- 1600-5368
- Volume :
- 70
- Issue :
- Pt 5
- Database :
- MEDLINE
- Journal :
- Acta crystallographica. Section E, Structure reports online
- Publication Type :
- Academic Journal
- Accession number :
- 24860297
- Full Text :
- https://doi.org/10.1107/S1600536814007831