Synthesis,Crystal Structures,and Thermal Analyses of Copper(II) and Manganese(II) Mixed‐Ligand Coordination Polymers Constructed from Benzimidazole‐5, 6‐dicarboxylic Acid and N‐Donor Ligands |
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Authors: | Yongli Wang Zhen Wei Lili Geng Xiaoqian Yang Xiaoying An Siyu Liang |
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Institution: | Research Institute of Applied Chemistry, Hebei North University, Zhangjiakou, 075000, P. R. China |
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Abstract: | The coordination polymers, {Cu(Hbidc)(2, 2′‐bpy)(H2O)] · 2H2O}n ( 1 ) and {Mn(Hbidc)(2, 2′‐bpy) (H2O)2] · 2H2O}n ( 2 ) (H3bidc = benzimidazole‐5, 6‐dicarboxylic acid, 2, 2′‐bpy = 2, 2′‐bipyridine), were synthesized in solution and characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis (TGA), and single‐crystal X‐ray diffraction. Complexes 1 and 2 consist of different 1D chain structures. In both compounds, 2, 2′‐bpy is chelating in a bidentate manner, whereas the Hbidc ligands in complexes 1 and 2 display chelating‐bridging tridentate and bridging bidentate coordination modes. The two complexes are further extended into 3D supramolecular structures through O–H ··· O and N–H ··· O hydrogen bonds. The thermal stabilities of complexes 1 and 2 were studied by thermogravimetric analyses (TGA). |
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Keywords: | Benzimidazole‐5 6‐dicarboxylic acid Coordination polymers Crystal structure Thermal analysis Copper Manganese |
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