LAUSR

Abstract Six new coordination polymers(CPs) {[Cd(L1)(CHDA)]·H2O}n (1), [Zn3(L1)2(1,2,4-BTC)2(H2O)4]n (2), [Zn(L2)(D-CAM)(H2O)]n (3), [Zn3(L2)(1,2,4-BTC)2(H2O)4]n (4), [Cd(L2)(1,3,5-HBTC)]n (5) and {[Zn(L2)(4,4´-BOA)]·H2O}n (6) (L1 = 3,6-bis(imidazol-1-yl)pyridazine, L2 = 3,6-bis(benzimidazol-1-yl)pyridazine, 1,4-H2CHDA = (1 S,4 S)-cyclohexane-1,4-dicarboxylic acid, 1,2,4-H3BTC = benzene-1,2,4-tricarboxylic acid, D-CAM = (1 R,3 S)-1,2,2-trimethylcyclopentane-1,3-dicarboxylic acid, 1,3,5-H3BTC = benzene-1,3,5-tricarboxylic acid, 4,4´-H2OBA = 4,4´-oxydibenzoic acid) were achieved by reactions of the corresponding metal salt with mixed organic ligands. Their structures were determined by single-crystal X-ray diffraction, IR spectra, elemental analysis, powder X-ray diffraction and thermogravimetric analysis. They exhibit varied structures, complexes 4 and 5 are porous three-dimensional (3D) frameworks, while 2 and 3 are 3D supermolecule structure formed by hydrogen-bonding interactions, and 1 is a two-dimensional (2D) network and 6 is an infinite one-dimensional (1D) chain. In addition, the fluorescent emission, fluorescence lifetimes of L1, L2 and 1–6 have been investigated and discussed.