Crystal structure of BiNbTe2O8

被引：22

作者：

Blanchandin, S ^{[1
]}

Champarnaud-Mesjard, JC ^{[1
]}

Thomas, P ^{[1
]}

Frit, B ^{[1
]}

机构：

[1] Fac Sci, UMR 6638 CNRS, Sci Procedes Ceram & Traitements Surface, F-87060 Limoges, France

来源：

SOLID STATE SCIENCES | 2000年 / 2卷 / 02期

关键词：

crystal structure; BiNbTe2O8; tellurite glasses;

D O I：

10.1016/S1293-2558(00)00121-7

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

BiNbTe2O8 crystallises with orthorhombic symmetry (space group Pbca) and unit cell parameters: a = 5.6109(7) Angstrom, b = 8.1277 (8) Angstrom, c = 31.205 (3) Angstrom, Z = 8. Its crystal structure has been solved from single crystal X-ray diffraction data and refined to a final reliability factor R1 = 0.0512. It can be described as a regular succession along [001] of ReO3-like sheets of NbO6 octahedra, and fluorite-like sheets of BiO8 distorted cubes and Te(I)O-4 disphenoids. These sheets are connected by Te(2)O-3 pyramids via Nb-O(4)-Te(2)-O(8)-Bi bridges. The lone pairs of Te(1) and Te(2) atoms are stereochemically active and point toward the empty cuboctahedral sites of the ReO3-like sheets. (C) 2000 Editions scientifiques et medicales Elsevier SAS. All rights reserved.

引用

页码：223 / 228

页数：6

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