Syntheses, Crystal Structures, and Optical Properties of Indium Arsenic(III) Oxide Halides: In2(As2O5)Cl2 and In4(As2O5)(As3O7)Br3

Authors

  • Xiao-Ming Jiang,

    1. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China, Fax: +86-591-8371-4946
    2. Graduate School of Chinese Academy of Sciences, Beijing 100039, P. R. China
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  • Zhong-Ning Xu,

    1. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China, Fax: +86-591-8371-4946
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  • Zhong-Yan Zhao,

    1. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China, Fax: +86-591-8371-4946
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  • Sheng-Ping Guo,

    1. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China, Fax: +86-591-8371-4946
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  • Guo-Cong Guo,

    1. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China, Fax: +86-591-8371-4946
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  • Jin-Shun Huang

    1. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China, Fax: +86-591-8371-4946
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  • Dedicated to Professor John D. Corbett on the occasion of his 85th birthday

Abstract

Two new indium arsenic(III) oxide halides, In2(As2O5)Cl2 (1) and In4(As2O5)(As3O7)Br3 (2), have been prepared by solid-state reaction. Both of the compounds feature layered structures, in which indium–oxide halide octahedral rings or indium–oxo chains are bridged by indium–oxide halide octahedral dimers or indium–oxo unicapped trigonal prisms, and the interlinkage between the rings or chains is also consolidated by (As2O5)4– anions for 1, or (As2O5)4– and (As3O7)5– anions for 2. Compound 2 is the first compound in which three different indium-ion coordination geometries coexist with the In3+ cations coordinated by O2– and Br to form [InO6], [InO7], and [InOBr3] units. The diffuse reflectance spectra and band-structure calculations show that they are wide-band-gap semiconductors.

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