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Polythioantimonate flux synthesis of the low-dimensional compounds A2AuSbS4 (A = Rb, Cs)

被引：10
作者：
Hanko, JA
Kanatzidis, MG [1 ]
机构：
[1] Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA
[2] Michigan State Univ, Ctr Fundamental Mat Res, E Lansing, MI 48824 USA
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 1998年 / 280卷 / 1-2期
基金：
美国国家科学基金会;
关键词：
polythioantimonate flux synthesis;
D O I：
10.1016/S0925-8388(98)00695-1
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The reaction of Au with a molten mixture of A(2)S/Sb/S (A=Rb, Cs) produced the isostructural quaternary compounds A(2)AuSbS(4). The yellow-brown crystals of Rb2AuSbS4 (I) and yellow crystals of Cs2AuSbS4 (II) are stable in air and water for several days and for over a month for I and II, respectively. The structure of Rb2AuSbS4 crystallizes in the space group Pbcm (not equal 57) and at 23 degrees C a=6.804(3) Angstrom, b=20.127(4) Angstrom, c=7.195(4) Angstrom, V=985(1) Angstrom(3), Z=8. Final R/R-w=4.5/6.6%. This structure consists of one-dimensional [AuSbS4](n)(2n-) chains separated by A(+) cations. The chains are comprised of Au+ cations linearly coordinated to [SbS4](3-) tetrahedra. The compounds were characterized with differential thermal analysis (DTA), far-IR, Raman, and solid-state UV/vis diffuse reflectance spectroscopy. (C) 1998 Elsevier Science S.A. All rights reserved.
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页码：71 / 76
页数：6
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