Coordination polymers constructed by diverse metal centers and the rigid ligand 3,5-di(1H-imidazol-1-yl)pyridine: Synthesis, structure and properties

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• 作者：Li Luo^a ; Yue Zhao^a ; Yi Lu^a ; Taka-aki Okamura^b ; Wei-Yin Sun^a ; ^{sunwy@nju.edu.cn}
• 关键词：Coordination polymers ; 3 ; 5-Di(1H-imidazol-1-yl)pyridine ; Anion exchange ; Photoluminescence property
• 刊名：Polyhedron
• 出版年：2012
• 期刊代码：87_02775387
• 类别：ch
• 出版时间：11 May, 2012
• 卷：38
• 期：1
• 页码：88-96
• 文件大小：1245 K

摘要

Six new coordination polymers, [Cu(L)₂(H₂O)₂](NO₃)₂ (1), [Cu(L)₂](ClO₄)₂ (2), [Cd(L)₂(H₂O)₂](ClO₄)₂ (3), [Cd(L)(OAc)₂(H₂O)] (4), [Cu₃(L)₄(H₂O)₂(SO₄)](SO₄)₂路30H₂O (5), and [Ni(L)(H₂O)₃(SO₄)] (6) [L = 3,5-di(1H-imidazol-1-yl)pyridine, OAc^{鈭?/sup> = CH₃COO鈭?/sup>], have been prepared and characterized by X-ray diffraction, IR, elemental and thermogravimetric analyses. Complexes 1, 4 and 6 have different one-dimensional (1D) chain structures, while 2 and 4 are two-dimensional (2D) networks. The chains and layers are further linked together by hydrogen bonds to generate three-dimensional (3D) frameworks. Complex 5 is a (3,4,4)-connected 3D framework with a Point (Schl盲fli) symbol of (4.82)₄(4.83.102)₂(42.82.102). The influences of the coordination modes of the ligand L, metal center as well as the counteranion on the structures of the complexes are discussed. Furthermore, the reversible anion exchange property of 3 and the photoluminescence properties of 3 and 4 have been investigated.}