Solvothermal reaction of aromatic terphenyl-2,5,2＇,5＇-tetracarboxylic acid （H4qptc） ligand and the transitional metal cation of Nin in the presence of 1,3-bi（4-pyri- dyl）propane （bpp） affords one new coordinat...Solvothermal reaction of aromatic terphenyl-2,5,2＇,5＇-tetracarboxylic acid （H4qptc） ligand and the transitional metal cation of Nin in the presence of 1,3-bi（4-pyri- dyl）propane （bpp） affords one new coordination polymer, [Ni（qptc）0.5（bpp）（H2O）], （1）. The structure has been determined by single-crystal X-ray diffraction analysis and further characterized by elemental analysis, IR, TGA, and magnetism. The qptc4- acts as a H-shaped ligand linking the NiⅡ centers together to form a 2D polymeric [Ni（qptc）0.5], layer consisting of alternately arranged left- and right-handed helical chains. Each 2D polymeric [Ni（qptc）0.5], layer is further linked through the bridging bpp ligands, thus resulting in a unique （3,4）- connected network with the （62.8）（62. 84） topology. The crystal of 1 crystallizes in monoclinic, space group C2/c with a = 16.088（5）, b = 14.913（5）, c = 18.849（6） A, β= 100.982（4）, V= 4439（2） A3, Z= 8, C24H21N2NiO5, Mr = 476.14, Dc = 1.425 g/cm3, F（000） = 1976 and μ（MoKa） = 0.912 mm-1. The final R = 0.0584 and wR = 0.1131 for 3894 observed reflections with Ⅰ 〉 20（I） and R = 0.1224 and wR = 0.1279 for all data.展开更多
基金supported by the National Natural Science Foundation of China (20873156)
文摘Solvothermal reaction of aromatic terphenyl-2,5,2＇,5＇-tetracarboxylic acid （H4qptc） ligand and the transitional metal cation of Nin in the presence of 1,3-bi（4-pyri- dyl）propane （bpp） affords one new coordination polymer, [Ni（qptc）0.5（bpp）（H2O）], （1）. The structure has been determined by single-crystal X-ray diffraction analysis and further characterized by elemental analysis, IR, TGA, and magnetism. The qptc4- acts as a H-shaped ligand linking the NiⅡ centers together to form a 2D polymeric [Ni（qptc）0.5], layer consisting of alternately arranged left- and right-handed helical chains. Each 2D polymeric [Ni（qptc）0.5], layer is further linked through the bridging bpp ligands, thus resulting in a unique （3,4）- connected network with the （62.8）（62. 84） topology. The crystal of 1 crystallizes in monoclinic, space group C2/c with a = 16.088（5）, b = 14.913（5）, c = 18.849（6） A, β= 100.982（4）, V= 4439（2） A3, Z= 8, C24H21N2NiO5, Mr = 476.14, Dc = 1.425 g/cm3, F（000） = 1976 and μ（MoKa） = 0.912 mm-1. The final R = 0.0584 and wR = 0.1131 for 3894 observed reflections with Ⅰ 〉 20（I） and R = 0.1224 and wR = 0.1279 for all data.
