Structural and luminescent properties of a series of Cd(II) pyridyl benzimidazole complexes that exhibit extended three-dimensional hydrogen bonded networks |
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| Authors: | Jin-Hua Wang Ting-Xiao Qin Yue-Zhi Cui Seik Weng Ng |
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| Institution: | 1. Department of Chemical Engineering, Shandong Provincial Key Laboratory of Fine Chemicals, Qilu?University?of?Technology, Jinan, P.R. China;2. Faculty of Science, Chemistry Department, King Abdulaziz University, Jeddah, Saudi Arabia |
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| Abstract: | Five new coordination complexes, CdI2(3-PyBim)](H2O)3 (1), Cd(SO4)(3-PyBim)(H2O)4] (2), CdCl2(4-PyBim)2(H2O)2] (3), CdBr2(4-PyBim)2(H2O)2] (4) and CdI2(4-PyBim)2(H2O)2] (5) 3-PyBim=2-Pyridin-3-yl-1H-benzoimidazole, 4-PyBim=2-Pyridin-4-yl-1H-benzoimidazole], were obtained under hydrothermal conditions and characterized by single crystal X-ray diffraction, IR, elemental analysis, and powder X-ray diffraction. All of the complexes have mononuclear structures. Among the crystal structures of these complexes, there exist a variety of intermolecular hydrogen bonding interactions and π?π interactions, which further extend to a 3-D supramolecular architecture. The solid state photoluminescent properties of 1–5 vary with the electronegativity of the coordination anion. Additionally, the thermogravimetric analyses of these complexes are discussed. |
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| Keywords: | Metal coordination complexes N-heterocyclic ligand self-assembly tunable luminescence cadmium anions |
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