Synthesis and characterization of the Zintl phase Na4Ba3As6 with isolated As35- anions

被引：4

作者：

Gascoin, F ^{[1
]}

Sevov, SC ^{[1
]}

机构：

[1] Univ Notre Dame, Dept Chem & Biochem, Notre Dame, IN 46556 USA

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2003年 / 175卷 / 02期

基金：

美国国家科学基金会;

关键词：

Zintl phases; arsenides; isolated oligomorphic anions of arsenic;

D O I：

10.1016/S0022-4596(03)00292-5

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The title compound was prepared by direct fusion of the corresponding elements at 800degreesC followed by slow cooling to room temperature. It crystallizes in the orthorhombic space group Pbcm (No. 57) with a = 11.340(2), b = 8.745(2), and c = 14.920(2) Angstrom, V = 1479.8(5) Angstrom(3), and Z = 4. The structure is made of isolated V-shaped trimers As-3(5-) and sodium and barium countercations. According to magnetic and resistivity measurements, Na4Ba3As6 is a narrow-gap semiconductor, i.e. a closed-shell compound that fulfills the Zintl concept. (C) 2003 Elsevier Inc. All rights reserved.

引用

页码：306 / 309

页数：4

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