Strong Second Harmonic Generation from the Tantalum Thioarsenates A3Ta2AsS11 (A = K and Rb)

被引：243
作者：
Bera, Tarun K. [1 ]
Jang, Joon I. [2 ]
Ketterson, John B. [2 ]
Kanatzidis, Mercouri G. [1 ,3 ]
机构：
[1] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA
[2] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA
[3] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 01期
基金：
美国国家科学基金会;
关键词：
OPTICAL-PROPERTIES; CRYSTAL-STRUCTURES; CS; ANION; THIOPHOSPHATES; CHALCOGENIDES; CATIONS;
D O I：
10.1021/ja807928d
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The strongly anisotropic thioarsenates A(3)Ta(2)AsS(11) are stabilized in a polysulfide flux. All compounds contain the same parallel (1)/-[Ta2AsS113-] polymeric anionic chains, but the size of the alkali-metals has a profound effect on the packing of the chains. The K+ or Rb+ favor noncentrosymmetric packing of the chains, whereas the larger Cs+ favors the centrosymmetric packing. The chains feature the combination of two asymmetric units [Ta2S11] and [AsS3] and exhibit strong nonlinear optical (NLO) second harmonic generation.
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页码：75 / +
页数：4
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