Syntheses, Crystal Structures, and Photoluminescent Properties for One New Cd(II) CP Based on 3,5-Bis(4′-carboxy-phenyl)-1,2,4-triazole and 1,4-Bis(imidazol-1-ylmethyl)benzene

One new coordination polymer (CP) [Cd(bct)(bib)]center dot 2(H2O) (1), based on 3,5-bis(4'-carboxy-phenyl)-1,2,4-triazole (H(2)bct) and 1,4-bis(imidazol-1-ylmethyl)benzene(bib), has been synthesized by hydrothermal method, and its structure was determined and characterized by single-crystal X-ray diffraction analysis, elemental analysis, IR spectroscopy, and thermogravimetric analysis. The crystal structure of CP 1 is a three-dimensional framework with (3,5)-connected topology, where the bct ligands adopt a mu(3)-kO, kO, kO coordination mode connecting with three Cd centers and the bib ligands adopt a mu(2)-kN, kN coordination mode bridging two Cd ions. It crystallizes in monoclinic system, space group C2/c, with a = 2.6838(4), b = 1.24221(17), c = 1.8011(2) nm, beta = 102.939(2)degrees, V = 5.8522(13) nm(3), Z = 8, C30H27CdN7O6, M-r = 694.00, D-c = 1.566 g/cm(3), F(000) = 2784, S = 1.055, R = 0.0294 and wR = 0.0731. Furthermore, solid-state photoluminescence measurements show that CP 1 produces strong emissions at room temperature.