| Metal-organic coordination complexes have a wide range of applications, due to their special properties in magnetic, optics, electronics, absorption and catalysis etc. The efforts on this field provide us not only complexes with novel structures or special properties, but also knowledge to understand the factors influencing their structure, then to synthesize the complexes with purpose is expected. In this paper, studies on compounds with novel structures and thermal-stabilities or photo properties have been reported. All of the compounds are constructed by nitrogen heterocyclic, carboxylate ligands. The influences of factors, such as the solvent, pH value, ratio of reactants, template effect of cations and the second ligand, on the formation of metal-organic coordination complexes have been discussed, too.Ten coordination complexes have been prepared by hydrothermal methods: [CuCl(C13H14N2)]n (1) , [Zn2(BPP) (C8H4O4)2]n, [Zn(C8H5O4)2(C10H8N2)2] (3) , [Co(C10H8N2) ( C10H8O6)(H2O)2] (4) [Zn2(C10H8N2)2(C8H4O4)2]n. n[(OH)0.5(H2O)](5)[Co(C7H7O2N2)2]n . nH2O(6) , [Zn(C10H8O6)(C12H8N2)] (7) , [Cu(C8H4O5)(C12H8N2)(H2O)] . 1.5(H2O) (8) [Zn(C10H8O6)(H2O)4]n (9), { (NH4)2 ?[Cd2(C6H5O7)2] }n (10), [Cd3(C6H5O7)2(H2O)2]n (11); The structures of all ten compounds have been determined by X-ray diffraction and element analyses, IR spectrums. TG has been employed to analyze compounds 4, 6, 10,11. The luminescent Properties of compounds 10 and 11 have beenstudied to explore the relationship with their structures and the result show that they could give fluorescence emission of blue or green-blue as the potential application for luminescent materials.The architectures of these compounds could be classified detailed by their building block units. According to their structure motifs, these compounds can be divided into: Compound 3, 8 belongs to a zero-dimensional structure; Compound If 7, 9 belong to a one-dimensional structure; the structures of 4, 5 are two-dimensional grid-like networks and the structures of 4, 5are two-dimensional layer networks. Compound 2% 6 is a three-dimensional organic-inorganic hybrid coordination polymer. The structure of 3 is a one-dimensional double-chain motif formed by hydrogen bonding interaction, and compounds 4, 5, 7, 9 are of three-dimensional structure formed by hydrogen bonding interaction. |
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