First examples of sulfides in the quaternary A/Cd/Sn/S (A=Li, Na) systems:: molten flux synthesis and single crystal X-ray structures of Li2CdSnS4, Na2CdSnS4 and Na6CdSn4S12

被引：40

作者：

Devi, MS ^{[1
]}

Vidyasagar, K ^{[1
]}

机构：

[1] Indian Inst Technol Madras, Dept Chem, Chennai 600036, India

来源：

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 2002年 / 09期

关键词：

D O I：

10.1039/b110254k

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Three new sulfides Li2CdSnS4 (1), Na2CdSnS4 (2) and Na6CdSn4S12 (3), have been synthesized using a molten flux of alkali-metal polysulfides and structurally characterized by single crystal X-ray diffraction studies. Both the layered compound 1 and the three-dimensional compound 2 have tetrahedral anionic frameworks of (CdSnS4)(2-) and, for charge compensation, alkali-metal cations. The two-dimensional compound 3 has Na+ ions interleaved between anionic (CdSn4S12)(6-) layers with an octahedral framework. Compounds 1, 2 and 3 are structurally related to Cu2CdGeS4, LiAlSe2 and Na2SnS3 respectively. Compound 2, as determined from its diffuse reflectance spectrum, is a semiconductor with a band gap of 1.52 eV.

引用

页码：2092 / 2096

页数：5

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