Syntheses, structures, and photoluminescence of two Cd(II) coordination polymers constructed from analogue (pyridyl)imidazole derivative and polycarboxylate acid |
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| Authors: | Rui-Hai Cui Yan-Hong Xu Zhao-Hua Jiang |
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| Affiliation: | aSchool of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, China;bDepartment of Chemistry, Harbin University, Harbin 150080, China;cFaculty of Chemistry, Northeast Normal University, Changchun 130024, China |
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| Abstract: | Two novel Cd(II) coordination frameworks based on a semirigid asymmetric ligand L and aromatic multi-carboxylate ligands, {Cd2L(btc)(H2O)2]·5H2O}n (1) and Cd2L2(bdc)]n (2) (L = (4-((2-(pyridine-2-yl)-1H-imidazol-1-yl)methyl)benzoic acid, H3btc = 1,3,5-benzenetricarboxylic acid, H2bdc = 1,3-benzenedicarboxylic acid), have been hydrothermally synthesized, and structurally characterized by elemental analysis, IR spectroscopy, single-crystal X-ray crystallography. Due to various coordination modes and conformations of the semirigid asymmetric ligand, and carboxylate containing co-ligands, therefore, the two complexes exhibit structural and dimensional diversity. Complex 1 exhibits a novel 2D (3, 5)-connected network structure with (3·52)(32·53·64·7) topology. Complex 2 exhibits a novel 3D CdSO4 topology, which is formed from different dinuclear cadmium units. In addition, the photoluminescence properties of the free ligand L, and complexes 1 and 2 were studied in the solid state at room temperature. |
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| Keywords: | Coordination polymer Analogue (pyridyl)imidazole derivative Dinuclear cadmium units Photoluminescence property |
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