Stabilization of the tungstyl ion configuration: the W(v) diphosphate KWOP2O7

Authors
Leclaire, A Chardon, J Raveau, B
Citation
A. Leclaire et al., Stabilization of the tungstyl ion configuration: the W(v) diphosphate KWOP2O7, J MAT CHEM, 11(3), 2001, pp. 846-848
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF MATERIALS CHEMISTRY
ISSN journal
09599428 → ACNP
Volume
11
Issue
3
Year of publication
2001
Pages
846 - 848
Database
ISI
SICI code
0959-9428(2001)11:3<846:SOTTIC>2.0.ZU;2-N
Abstract
A new W(v) diphosphate KWOP2O7 isotypic to the Mo(v) compound has been synt hesized. It crystallizes in the space group P12(1)/n1 with a = 5.0629(3), b = 11.770(2), c = 11.551(1), beta = 91.039(6). This mixed framework of corn er-sharing P2O7 groups and WO6 octahedra forms large tunnels where the K+ i ons are located. This study evidences for the first time the ability of W(v ) to form tungstyl ions in a phosphate matrix, the W(v) octahedra being cha racterized by an abnormally short W-O bond of 1.687 Angstrom, similarly to Mo(v).