Pentalead tris(vanadate) iodide, a defect vanadinite-type compound

Authors
Audubert, F Savariault, JM Lacout, JL
Citation
F. Audubert et al., Pentalead tris(vanadate) iodide, a defect vanadinite-type compound, ACT CRYST C, 55, 1999, pp. 271-273
Citations number
24
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
ISSN journal
01082701 → ACNP
Volume
55
Year of publication
1999
Part
3
Pages
271 - 273
Database
ISI
SICI code
0108-2701(19990315)55:<271:PTIADV>2.0.ZU;2-V
Abstract
A single crystal of Pb-9.85(VO4)(6)I-1.7 was grown at 1073 K from a mixture of lead vanadate and lead iodide. The structure is of the apatite type wit h a deficiency of lead iodide. The Pb atom is distributed equally in sites I and II of apatite. The Pb2+ lone pair induces displacements of the Pb, O and I atoms out of their apatite sites. The apatite structure is preserved by an 'under-stoichiometry' of lead iodide, which allows the distortions to relax.