Chemical vapor transport and solid-state exchange synthesis of new copper selenite bromides |
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| Institution: | 1. Inorganic Chemistry Division, Department of Chemistry, Moscow State University, GSP-1, 119991, Moscow, Russia;2. Department of Crystallography, St. Petersburg State University, University emb. 7/9, 199034, St. Petersburg, Russia;1. Jiangsu Laboratory of Advanced Functional Materials, Department of Physics, Changshu Institute of Technology, Changshu 215500, China;2. National Laboratory of Solid State Microstructures and Key Laboratory of Nanomaterials for Jiang Su Province, Nanjing University, Nanjing 210093, China;1. Department of Physics, Meiji University, Kawasaki 214-8571, Japan;2. Department of Physics, Hokkaido University, Sapporo 060-0810, Japan;1. College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, PR China;2. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, PR China |
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| Abstract: | A new dimorphic copper selenite bromide, Cu5(SeO3)4Br2 was obtained via chemical transport reactions. α-Cu5(SeO3)4Br2, monoclinic (1m) and β-Cu5(SeO3)4Br2, triclinic (1a) polymorphs were produced simultaneously upon reaction of amorphous, partially dehydrated copper selenite and copper bromide. 1m is similar to Cu5(SeO3)4Cl2, whereas 1a is distantly related to Ni5(SeO3)4Br2 and Co5(SeO3)4Br2. Attempts to reproduce synthesis of 1a via exchange reaction between Na2SeO3 and CuBr2 resulted in a new Na2Cu7O2](SeO3)4Br4 (2). Current study demonstrates for the first time, that both chemical vapor and exchange reactions can be employed in preparation of new selenite halides. |
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| Keywords: | Copper Selenium Selenites Polymorphism CVT-reactions Solid-state exchange synthesis Jahn-Teller distortion Lone pairs Single-crystal x-ray diffraction |
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