Abstract
Three isostructure coordination polymers with a general formula: [ML(bbi)(H2O)2]n (M=Co, 1; Zn, 2; Cd, 3) {L=fumaric acid dianion, bbi=1,4-bis(1H-imidazol-1-yl)butane} have been successfully prepared by adopting liquid diffusion method. Their structures have been determined by single-crystal X-ray diffractions, and further characterized by elemental analysis, FT-IR spectra, Powder X-ray diffractions and thermogravimetric (TGA) studies. The results show that they all possess a three-dimensional (3D) framework constructed by the double helical chains and L dianions and reveal a 3-fold interpenetrating net with a uninodal 4-connected Diamond-related topology. In addition, the photoluminescent properties of 2 and 3 have also been investigated at room temperature.
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