Abstract
A novel 3D heterometal–organic coordination polymer [{K2(H2O)6} {Cu3(Hpimdc)2(CN)2}{Cu2(H3pimdc)2(CN)}]·2H2O (1) (H3pimdc=2-propyl-1H-imidazole-4,5-dicarboxylic acid) has been synthesized under hydrothermal conditions and characterized by elemental analysis, IR, PXRD, UV–vis, and single-crystal X-ray diffraction. In complex 1, adjacent K+ ions are linked through H3pimdc to form binuclear chain units {K2(H2O)6}n, which connect with unique Cu-cyanide complex linker {Cu3(CN)2(Hpimdc)2} to form 2D layers. The 2D layers are further connected via another linkage unit {Cu2(CN)(H3pimdc)2} to form 3D frameworks with (41162)2(334251101123164) topology. The H3pimdc ligand in 1 exhibits μ2- and μ4-two kinds of coordination fashions. In addition, the N2 adsorption, fluorescence, and photocatalytic properties of polymer 1 are evaluated detailed.
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