Organic carboxylate anions effect on the structures of a series of Mn(II) complexes based on 2-phenylimidazo[4,5-f]1,10-phenanthroline ligand |
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Authors: | Xiuli Wang Yongqiang Chen Guocheng Liu Hongyan Lin Jinxia Zhang |
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Institution: | aFaculty of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121000, PR China |
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Abstract: | In our efforts to tune the structures of Mn(II) complexes by selection of organic carboxylic acid ligands, six new complexes Mn(PIP)2Cl2] (1), Mn(PIP)2(4,4′-bpdc)(H2O)]·2H2O (2), Mn(PIP)2(1,4-bdc)] (3), Mn(PIP)(1,3-bdc)] (4), Mn(PIP)2(2,6-napdc)]·H2O (5), and Mn(PIP)(1,4-napdc)]·H2O (6) were obtained, where PIP=2-phenylimidazo4,5-f]1,10-phenanthroline, 4,4′-H2bpdc=biphenyl-4,4′-dicarboxylic acid, 1,4-H2bdc=benzene-1,4-dicarboxylic acid, 1,3-H2bdc=benzene-1,3-dicarboxylic acid, 2,6-H2napdc=2,6-naphthalenedicarboxylic acid, 1,4-H2napdc=1,4-naphthalenedicarboxylic acid. All complexes have been structurally characterized by IR, elemental analyses, and single crystal X-ray diffraction. Structural analyses show that complexes 1 and 2 possess mononuclear structures, complexes 3, 4, and 5 feature chain structures, and complex 6 exhibits a 2D (4,4) network. The structural difference of 1–6 indicates that organic carboxylate anions play important roles in the formation of such coordination architectures. Furthermore, the thermal properties of complexes 1–6 and the magnetic property of 4 have been investigated. |
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Keywords: | Hydrothermal synthesis Crystal structure Carboxylate anion Manganese complexes Properties |
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