A new coordination polymer, namely [ZnBr（bmb）（Hbmb）]_n（1）（Hbmb = 3-benzoimidazol-1-yl-benzoic acid）, has been synthesized through a hydrothermal method and characterized by single-crystal X-ray diffraction, el...A new coordination polymer, namely [ZnBr（bmb）（Hbmb）]_n（1）（Hbmb = 3-benzoimidazol-1-yl-benzoic acid）, has been synthesized through a hydrothermal method and characterized by single-crystal X-ray diffraction, elemental analysis, infrared spectra, thermogravimetric analysis, and fluorescent characterization. The crystal structure is of triclinic system, space group P1 with a = 10.637（3）, b = 11.660（3）, c = 12.406（3） ？, α = 103.462（3）, β = 105.144（3）, γ = 110.513（3）o, V = 1298.5 ？~3, C_（28）H_（19）N_4O_4 ZnBr, Mr = 624.0, Z = 2, Dc = 1.588 g/cm^3, F（000） = 624, the final R = 0.0253 and w R = 0.0616 for 4385 observed reflections. The polymer features a chain-like structure and stabilizes itself by interchain hydrogen bonds to form a 2D supramolecular structure. 1 exhibits a strong blue emission with a fluorescent lifetime of 1.13 ns, and emitting mechanism of ligand-centered charge transition also was confirmed by the first-principle calculation.展开更多
文摘A new coordination polymer, namely [ZnBr（bmb）（Hbmb）]_n（1）（Hbmb = 3-benzoimidazol-1-yl-benzoic acid）, has been synthesized through a hydrothermal method and characterized by single-crystal X-ray diffraction, elemental analysis, infrared spectra, thermogravimetric analysis, and fluorescent characterization. The crystal structure is of triclinic system, space group P1 with a = 10.637（3）, b = 11.660（3）, c = 12.406（3） ？, α = 103.462（3）, β = 105.144（3）, γ = 110.513（3）o, V = 1298.5 ？~3, C_（28）H_（19）N_4O_4 ZnBr, Mr = 624.0, Z = 2, Dc = 1.588 g/cm^3, F（000） = 624, the final R = 0.0253 and w R = 0.0616 for 4385 observed reflections. The polymer features a chain-like structure and stabilizes itself by interchain hydrogen bonds to form a 2D supramolecular structure. 1 exhibits a strong blue emission with a fluorescent lifetime of 1.13 ns, and emitting mechanism of ligand-centered charge transition also was confirmed by the first-principle calculation.
