A New Polynuclear Copper‐Complex‐Substituted Tungstoarsenate(V) |
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| Authors: | Ruizhan Tong Bin Liu Ganglin Xue Prof Dr Huaiming Hu Feng Fu Jiwu Wang |
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| Institution: | 1. Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education), Shaanxi Key Laboratory of Physico‐Inorganic Chemistry, Department of Chemistry, Northwest University, Xi′an, 710069, R. P. China;2. Department of Chemistry, Yan′an University, Yan′an, 716000, R. P. China |
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| Abstract: | A new polynuclear copper‐complex‐substituted dimeric tungstoarsenate(V), H2{Cu(2,2′‐bpy)}8(H2O)2(AsW9O34)2] · 12H2O ( 1 ) (2,2′‐bpy = 2,2′‐bipydine), was synthesized hydrothermally and its structure was determined by single‐crystal X‐ray diffraction. The title compound has Ci symmetry and consists of two trilacunary Keggin anions α‐AsW9O34]9– supported by eight copper complex cations. The compound was also characterized by IR and fluorescence spectroscopy, TG analysis, and magnetic measurements. The emission spectrum of the compound in solid‐state exhibits a redshift relative to those of Na8A‐HAsW9O34] · 11H2O and the free ligand 2,2′‐bpy. Magnetic measurements of the compound indicate competing ferro‐ and antiferromagnetic intramolecular coupling among the CuII atoms in the cluster anion. |
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| Keywords: | Polyoxometalates Tungstoarsenates Copper Hydrothermal synthesis Organic‐inorganic hybrid composites |
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