The first chlorofluoride in niobium cluster chemistry structure of the double salt: NaxNb7F21-yCly (x similar to 2; y similar to 8)

Authors
Cordier, S Simon, A
Citation
S. Cordier et A. Simon, The first chlorofluoride in niobium cluster chemistry structure of the double salt: NaxNb7F21-yCly (x similar to 2; y similar to 8), SOLID ST SC, 1(4), 1999, pp. 199-209
Citations number
22
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE SCIENCES
ISSN journal
12932558 → ACNP
Volume
1
Issue
4
Year of publication
1999
Pages
199 - 209
Database
ISI
SICI code
1293-2558(199906)1:4<199:TFCINC>2.0.ZU;2-O
Abstract
The new compound NaxNb7F21-yCly (x similar to 2;y similar to 8) synthesized by solid state chemistry crystallizes in the cubic system (space group Pm- 3m) with a = 8.2005 (9) Angstrom. The structure has been determined by X-ra y diffraction on single crystal; it is related to that of Nb6F15. However, in the title compound, only one Nb(6)F(12)(i)F(a-a)6/2 subnetwork is preser ved. The second one is replaced by (NbF6)(II-)entities. Additional Na+ cati ons provide the cohesion of the structure. We present here this new structu re and discuss the possible oxidation states of the single niobium atom ins ide the (NbF6)(n-) entities and the valency electron concentration (VEC) of the Nb-6 cluster.