Pentabarium tetraantimonide, β-Ba5Sb4:: a more symmetrical arrangement for the Ba5Sb4 compound

被引：10

作者：

Derrien, G ^{[1
]}

Monconduit, L ^{[1
]}

Tillard, M ^{[1
]}

Belin, C ^{[1
]}

机构：

[1] Univ Montpellier 2, Lab Agregats Mol & Mat Inorgan, ESA 5072, F-34095 Montpellier 5, France

来源：

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS | 1999年 / 55卷

关键词：

D O I：

10.1107/S0108270199003984

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ba5Sb4 crystallizes in the orthorhombic space group Cmca and is isostructural with Eu5As4 reported in the Ccmb alternate setting. beta-Ba5Sb4 is a new arrangement which is more symmetrical than alpha-Ba5Sb4 [Brechtel, Cordier & Schafer (1981). Z. Naturforsch. Teil B, 36, 1341-1342; Pnma, isostructural with Sm5Ge4]. The structure contains two anionic moieties, i.e. Sb-4(2-) dumbbells [Sb-Sb 2.886 (3) Angstrom] and Sb3-. The Sb1 atom (Sb3-) lies inside a monocapped distorted trigonal prism (6 x Ba1 and 1 x Ba2). The Sb2 atom, which forms the Sb-2(4-) dumbbell, sits inside a tricapped trigonal prism (6 x Bal, 2 x Ba2 and 1 x Sb2).

引用

页码：1044 / 1046

页数：3

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