| Metal-organic coordination polymers (MOCPs) as novel multifunctional materials, have attracted much more attentions because of their flexible tailoring, various topologies and promising application in hydrogen storage, adsorption, ion-exchange, molecular recognization, catalysts along with optics, electrics, magnetism and enantioselective separation. These open MOCPs possess not only porous phase similar to inorganic zeolites but also better performance in gas sorption and storage than traditional zeolites. The aim of this thesis is to utilize the principles of crystal engineer to design and synthesize the metal-organic coordination polymers constructed from metal ions and multi-carboxylate ligands in order to find the new synthetic pathways of clustered metal-organic coordination polymer and explore their structural characters and their physical properties.The first chapter is a very brief introduction of MOCPs. The assembly reactions of rigid H4btec with metal ions such as Cd and Mg have yielded three coordination polymers in the second chapter.We have reported the high yield synthesis of a rare Mg-based metal-organic open framework [Mg1.5(μ5-btec) (H2O)2]·[H2N(CH3)2]·H2O (1). The H4btec ligand shows a novel and unprecedented coordination mode. We have also reported Zn-based coordination polymers , [Zn(btec)1/2]n (2) and [Zn(H2btec)(4,4'-bipy)(H2O)2·(4,4'-bipy)] (3). Compound 2 shows rare non-interpenetrated (4,8)-connected net with toplogy of (45·8)2(410·52·613·72·8). Compound 3 is the first square grid coordination polymer constructed by btec and4,4'-bipy ligands with dimensions of 11.519×11.290A2.In the third chapter, two cadmiun coordination polymers Cd(AmTAZ)Cl(4) [Cd(AmTAZ)(BDC)(H2O)2]·1.25H2O(5) (AmTAZH=3-amino-1,2,4-triazole, H2BDC=benzene-1, 4-dicarboxylic acid) have been synthesized under hydrothermal in Stiu conditions and characterized by IR, TG-DTA, CHN elemental analysis and single crystal X-ray diffraction analysis. In the fifth chapter, we have successfully constructed a novel MOF based on Lead and an imidazole-4,5-dicarboxylic acid (H3IDC) under solvothermal conditions. The H3IDC ligand shows a novel and unprecedented coordination mode. The 2-D (3,3)-net architecture with a rare (4·82) topology is built from alternately arranged left- and right-handed helical chains bridged by HIDC2- ligands.
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