Syntheses and characterizations of four metal coordination polymers constructed by the pyridine-3,5-dicarboxylate ligand |
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| Authors: | Ya-Hui Zhao Zhong-Min SuYao-Mei Fu Kui-Zhan ShaoPeng Li Yong WangXiang-Rong Hao Dong-Xia ZhuSi-Dong Liu |
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| Institution: | Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun, Jilin 130024, PR China |
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| Abstract: | A series of metal-organic frameworks, namely Ni(PDB)(H2O)]n (1), Pb(PDB)(H2O)] · (H2O) (2), Co2(PDB)2(bpy)2(H2O)4] · 4H2O (3) and Co2(PDB)2(phen)2]n (4) (H2PDB = pyridine-3,5-dicarboxylic acid, bpy = 2,2′-bipyridine, phen = 1,10-phenanthroline), have been synthesized based on pyridine-3,5-dicarboxylate acid and two neutral chelate ligands, with different metal ions such as NiII, CoII and PbII, under hydrothermal conditions. The framework structures of these polymeric complexes have been determined by the X-ray single crystal diffraction technique. In the four complexes, the pyridine-3,5-dicarboxylate acid ligand exhibits diverse coordination modes, which play an important role in the construction of metal-organic frameworks. The thermal analyses of these four complexes have been measured and discussed. In addition, complex 2 shows strong phosphorescent emission at room temperature and the magnetic measurement of the polymer of 4 reveals a typical antiferromagnetic exchange. |
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| Keywords: | Coordination polymer Pyridine-3 5-dicarboxylate acid Crystal structure Phosphorescence Magnetic property |
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