Subsolidus phase relations in Na2O-CuO-Sb2On system and crystal structure of new sodium copper antimonate Na3Cu2SbO6

被引：63

作者：

Smirnova, OA

Nalbandyan, VB

Petrenko, AA

Avdeev, M

机构：

[1] Rostov State Univ, Fac Chem, Dept Gen & Inorgan Chem, Rostov Na Donu 344090, Russia

[2] Univ Aveiro, CICECO, Dept Ceram & Glass Engn, P-3810193 Aveiro, Portugal

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2005年 / 178卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

antimonate sodium copper antimony oxide; phase relations; X-ray diffraction; rietveld refinement; Jahn-Teller effect; alpha-NaFeO2; type; superstructure; pseudosymmetry;

D O I：

10.1016/j.jssc.2005.02.002

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Subsolidus phase relation studies in the NaSb3O7-Na3SbO4-CuO-CuSb2O6 quadrangle of Na2O-CuO-Sb2On system at 1123-1173 K revealed the formation of one new compound Na3Cu2SbO6. It is a superstructure derived from alpha-NaFeO2 type, space group C2/m, lattice constants: a = 5.6759(1) angstrom, b = 8.8659(1) angstrom, c = 5.8379(1) angstrom, beta = 113.289(1)degrees. All ions are in octahedral environment, but CuO6 polyhedron exhibits strong elongation due to Jahn-Teller effect (Cu-O: 2.000(2) angstrom x 2, 2.021(2) angstrom x 2, 2.494(3) angstrom x 2), whereas SbO6 octahedron is almost regular. The relationship to other similar superlattices is discussed. (c) 2005 Elsevier Inc. All rights reserved.

引用

页码：1165 / 1170

页数：6

共 37 条

[11] THE STRUCTURAL CHEMISTRY OF LI3ZN2SBO6, LI3ZN2BIO6 AND RELATED PHASES [J].