Novel copper-complex-substituted tungstogermanates |
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| Authors: | Wang Chun-Mei Zheng Shou-Tian Yang Guo-Yu |
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| Institution: | State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China. |
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| Abstract: | Two copper-complex-substituted tungstogermanates Cu5(2,2'-bpy)6(H2O)]GeW8O31].9H2O, 1, and {Cu5(2,2'-bpy)5(H2O)]GeW9O34]}2.7H2O, 2 (2,2'-bpy = 2,2'-bipyridyl), have been hydrothermally synthesized and structurally characterized. X-ray structural analyses show that 1 is a rare tetralacunary Keggin anion of B-beta-GeW8O31]10- substituted by copper complexes, while dimer 2 consists of two trilacunary B-alpha-GeW9O34]10- Keggin units bridged by copper complexes. Magnetic measurement for 2 shows the presence of antiferromagnetic interactions within the dinuclear Cu2+ cations. |
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