| Hydrothermal Synthesis and Structure of a Mixed-valence Polyoxotungstate Decorated by Copper(I) Coordination Group, [Cu(en)_2H_2O]_2[{Cu(en)_2}HPW_(12)O_(40)]·2H_2O |
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| 引用本文： | 李真,林碧洲,韩国华,耿凤,刘培德.Hydrothermal Synthesis and Structure of a Mixed-valence Polyoxotungstate Decorated by Copper(I) Coordination Group, [Cu(en)_2H_2O]_2[{Cu(en)_2}HPW_(12)O_(40)]·2H_2O[J].结构化学,2005(5). |
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| 作者姓名： | 李真 林碧洲 韩国华 耿凤 刘培德 |
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| 作者单位： | Institute of Materials Physical Chemistry，Huaqiao University，Quanzhou 362021，China，Institute of Materials Physical Chemistry，Huaqiao University，Quanzhou 362021，China，Institute of Materials Physical Chemistry，Huaqiao University，Quanzhou 362021，China，Institute of Materials Physical Chemistry，Huaqiao University，Quanzhou 362021，China，Institute of Materials Physical Chemistry，Huaqiao University，Quanzhou 362021，China |
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| 基金项目： | This work was supported by the Natural Science Foundation of Fujian Province (No. E0420001) and the Science Foundation of Huaqiao University (No. 03HZR9) |
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| 摘 要： | 1 INTRODUCTION Polyoxometalates (POMs) are early transition metal oxygen clusters and have aroused much inte- rest because of their discrete structures of definite sizes, shapes1] and potential applications in cata- lysis, medicine, materials science, g…
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Hydrothermal Synthesis and Structure of a Mixed-valence Polyoxotungstate Decorated by Copper(I) Coordination Group, [Cu(en)_2H_2O]_2[{Cu(en)_2}HPW_(12)O_(40)]·2H_2O |
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| Abstract: | A complex Cu(en)2H2O]2{Cu(en)2}HPW12O40]?2H2O (C12H57Cu3N12O44PW12, Mr = 3501.49) has been synthesized under hydrothermal conditions and its crystal structure was determined by X-ray diffraction. It crystallizes in the orthorhombic system, space group Pbca with a = 21.680(4), b = 20.680(4), c = 26.120(5) ?, V = 11711(4) ?3, Dc = 3.972 g/cm3, Z = 8, μ(MoKa) = 24.661 mm?1, F(000) = 12440, the final R = 0.0527 and wR = 0.1416 for 11527 observed reflec- tions with I > 2σ(I). The crystal structure is composed of {Cu(en)2}HPW12O40]2? anions, discrete Cu(en)2H2O]+ complex cations and crystal water molecules, which are held together into a three- dimensional network through hydrogen-bonding interactions. The anionic {Cu(en)2}HPW12O40]2? is formed by the mixed valance {HPWVI11WVO40}3? Keggin unit covalently linked by a {Cu(en)2}+ group. |
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| Keywords: | hydrothermal synthesis crystal structure polyoxotungstate copper complexes bimetallic oxide clusters |
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