Pyrochlore-type tin niobate

Authors
Cruz, LP Savariault, JM Rocha, J
Citation
Lp. Cruz et al., Pyrochlore-type tin niobate, ACT CRYST C, 57, 2001, pp. 1001-1003
Citations number
23
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
ISSN journal
01082701 → ACNP
Volume
57
Year of publication
2001
Part
9
Pages
1001 - 1003
Database
ISI
SICI code
0108-2701(200109)57:<1001:PTN>2.0.ZU;2-V
Abstract
A single crystal of Sn1.59Nb1.84O6.35 was grown at 1273 K from a mixture of sodium niobate and tin(II) chloride. The structure is of pyrochlore type A (2)B(2)O(7). The tin is partially oxidized to tin(IV) and competes with nio bium for the occupation of site B. The stereoactivity of the Sn2+ lone pair induces displacement of tin towards the O atoms of the tunnel.