Study Of The Coordination Polymers Based On A Multi(Triazole) Neutral Ligand

Ten new coordination polymers with novel structures based on a multi(triazole) neutral ligand (htpmb, the structure is shown in Scheme1), carboxylates/polyoxometalates anions and Zn(Ⅱ)/Cd(Ⅱ) ions under hydrothermal conditions have been obtained. The synthesis conditions, types of topological structures, influences of the pH values and the types of anions on the structures of the compounds, effects of the kinds of metal ions and N-donor ligands on topological structures have been investigated. These compounds have been characterized by infrared spectra (IR) and elemental analyses. In addition, the luminescent properties of ten compounds and photocatalytical behaviors of certain compounds have also been studied. Scheme1. The structure of htpmb ligand.1. The reactions of htpmb and d10metal ions with the help of aromatic carboxylic acids (H2L1=1,4-benzenedicarboxylic acid, H2L2=2-hydroxy-benzoic acid, HL3=benzoic acid and H3L4=5-hydroxy-1,3-benzenedicarboxylic acid) afford seven coordination polymers. Compounds1and2reveal the3D binodal6-connected nets with Schlafli symbol of (45·55·65)(46·69) topology. Compounds3and4show the3D2-fold interpenetrating frameworks with (4·64·8)(42·62·82) topology. Compounds5and6display1D chain structures, and the hydrogen-bonding interaction further stabilizes the structure in compound5. Compound7possesses a1D double chain structure. [Zn2(htpmb)(L3)4](6)[Cd4(htpmb)(L4)2(OH)2(H2O)3]·8H2O (7)2. The combinations of htpmb and octamolybdate anions in the presence of Zn(II) andCd(II) ions provide three coordination polymers. Compound8exhibits3D (5,6)-connectednet with (32·43·5·63·7)(32·44·54·62·73) topology. Compound9displays3D(4,5,6,6,7)-connected framework with Schl fli symbol of(32·4·5·62)(32·42·52·63·8)(34·42·52·64·72·8)(34·42·52·66·9)(34·43·5·68·75) topology. Compound10is a3D (3,4,4,6,6)-connected net with Schl fli symbol of(3·6·7)(32·4·62·7)(34·42)(32·66·76·10)(33·4·63·74·84) topology.[Zn4(htpmb)2(θ-Mo8O26)(OH)4(H2O)2.5]·0.5H2O (8)[Zn6(htpmb)2(γ-Mo8O26)2(SO4)(OH)2(H2O)4]·6.5H2O (9)[Cd2(htpmb)(γ-Mo8O26)(H2O)2]·4.5H2O (10)...