Synthesis Structure And Character Study Of Aromatic Carboxylic Acid Coordination Polymers

In recent years, much attention has been paid to the design, syntheses, crystal structures and properties of coordination polymers, Carboxylate ligands have been frequently employed in the field of catalytic and magnetic in that their ability to engage in diverse bonding modes bind with metal atoms.In the first chapter, one brief introduction about the concept and development of coordination polymers, the classification, the general synthesis method and the influence factor of coordination polymers, cas well as research significance and tendency.In the second chapter, Under hydrothermal,1,3,5-benzenetricarboxylic acid (BTC) and CuSO4·5H2O,NiSO4·6H2O,CoSO4·7H2O have been used as reacted materials then three new compounds Cu(BTC)2·3H2O (B1), Ni3(BTC)3·12H2O (B2) and Co3(BTC)3·12H2O (B3) have been obtained. These compounds have been characterized by IR spectra and elemental analyses. Complexes B1 and B2 were all show 1-D Zigzag polymer chains and 2-D layer structure by single-crystal X-ray. The crystal structure analysis shows that in the coordination polymers B1, the Copper(II) is a five-coordinated in a slightly distorted tirgonal biyramid. But structure of the coordination polymers B2 is different from B1, the Nickel(II) is a six-coordinated in a slightly distorted octahedral.In the third chapter, We reacted 1,2-Benzenedicarboxylic acid(BDC) with Mn(II) and Zn(II), then employed 1,10-phenanthroline(1,10-phen) as an auxiliary ligand, which two compound ,namely Mn[(BDC·phen)·H2O] (D1) and Zn[(BDC·phen)·H2O] (D2) were synthesized. The two complexes were characterized by IR spectra and elemental analysis. Complex D2 show 1-D polymer chains structure by single-crystal X-ray. The crystal structure analysis shows that the Zn(II) is a six coordinated in a distorted tetragonal pyramid.In the fourth chapter, B1 and D1 as a catalysts for phenol hydroxylation reaction. The results shows that the coordination complexes have catalytic activity to the phenol hydroxylating and also display a certain catalyzed selectivity .In the 5-300K, Magnetic property of polymers B2 have been investigated, magnetic analysis revealed that existence of weak antiferromagnetic between the transition metal ions in the polymeric Ni(II) complexes.