Synthesis, Structures, and Fluorescent Properties of Three Cobalt-Based Coordination Polymers with a Rigid Tripodal Carboxylate Ligand

摘要

Three cobalt(II) coordination polymers, [Co-2(tatb)(2)(2,2-bipy)(2) (H2O)(2)DMA2H(2)O] (1), [Co-2(tatb)(2)(1,10-phen)(2)(H2O)(2)2H(2)O] (2) and [Co(tatb)(1,3-dpp)H2O] (3) (H(3)tatb = 4,4,4-(1,3,5-triazine-2,4,6-triyl)tribenzoic acid; 2,2-bipy = 2,2-bipyridyl; 1,10-phen = 1,10-phenanthroline; 1,3-dpp = 1,3-bis(pyridin-4-yl)propane), were synthesized solvothermally and characterized by single-crystal and powder X-ray diffraction (PXRD), as well as IR spectroscopy. Complexes 1 and 2 exhibit 1D double-chain structures, which further connect into interesting 3D networks by hydrogen bond and strong - interactions. Complex 3 possesses 2D 4(4)-sql topology, which is packed parallel in an AA fashion. Moreover, thermal stability properties and photoluminescence properties of 1, 2 and 3 were also investigated.