Self‐assembly of Two Cobalt(II) Coordination Polymers Derived from Tetrabromoterephthalate and Flexible Bis(Benzimidazole) Co‐ligands |
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| Authors: | Ju‐Meng Hu Yong‐Guang Liu Kristof Van Hecke Guang‐Hua Cui Li‐Hua Han |
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| Affiliation: | 1. College of Chemical Engineering, Hebei United University, 46 West Xinhua Road, Tangshan, 063009, Hebei, P. R. China;2. Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281 S3, 9000 Ghent, Belgium |
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| Abstract: | Two new cobalt(II) coordination polymers, {[Co(L1)(tbta)] · 0.8H2O}n ( 1 ) and {[Co(L2)(tbta)] · H2O}n ( 2 ) [L1 = 1,1′‐(1,3‐propanediyl)bis(2‐methylbenzimidazole), L2 = 1,2‐bis(2‐methylbenzimidazole‐1‐ylmethyl)benzene, H2tbta = tetrabromoterephthalic acid] were obtained under hydrothermal conditions and structurally characterized by single‐crystal X‐ray diffraction methods, IR spectroscopy, TGA, and elemental analysis. The cobalt atoms present similar environments with tetrahedral arrangements in 1 and 2 . The two complexes show a 2D (4,4) coordination network with sql topology. Compound 2 is further extended into a rare 3 , 3 , 4T3 three‐dimensional supramolecular framework by weak C–H ··· O hydrogen bonding interactions. The fluorescence and catalytic properties of the complexes for the degradation of the congo red azo dye in a Fenton‐like process were investigated. |
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| Keywords: | Bis(benzimidazole) Catalysis Cobalt Coordination polymer Crystal structure Fluorescence |
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