We successfully synthesized a new cobalt（II） coordination polymer under hydrothermal conditions, [Co（L）0.5（chdc）（H2O）]n （L = 1,4-bis（thiabendazole）butane, H2chdc = 1,4-cyclo- hexanedicarboxylic acid）, whic...We successfully synthesized a new cobalt（II） coordination polymer under hydrothermal conditions, [Co（L）0.5（chdc）（H2O）]n （L = 1,4-bis（thiabendazole）butane, H2chdc = 1,4-cyclo- hexanedicarboxylic acid）, which were then characterized by elemental analyses, TG, IR spectro- scopy and single-crystal X-ray diffraction. It crystallizes in the monoclinic system, space group P21/c with a =10.2855（12）, b = 9.3606（11）, c = 20.436（3） A, β = 91.573°, V= 1966.8（4） A3, Z = 4, C20H22CoN3O5S, Mr = 475.40, Dc = 1.605 g/cm3, μ = 1.018 mm-1 and F（000） = 984. The complex possesses a uninodal three-connected hcb Shubnikov hexagonal plane structure with {63} topology. These planes are further linked into a 3D supramolecular network via O-H…O hydrogen bonds involving coordinated water molecules and oxygen atoms of chdc2- ligands. The fluorescence and catalytic activities of the complex for degradation of Congo red in a Fenton-like process were investigated.展开更多
This article mainly reviews the problems of grammar teaching in rational and background.And according to the difficulties,a complete teaching designed,which is expected to be helpful to the teachers.
基金supported by the National Natural Science Foundation of China(51474086)Natural Science Foundation-Steel and Iron Foundation of Hebei Province(B2015209299)
文摘We successfully synthesized a new cobalt（II） coordination polymer under hydrothermal conditions, [Co（L）0.5（chdc）（H2O）]n （L = 1,4-bis（thiabendazole）butane, H2chdc = 1,4-cyclo- hexanedicarboxylic acid）, which were then characterized by elemental analyses, TG, IR spectro- scopy and single-crystal X-ray diffraction. It crystallizes in the monoclinic system, space group P21/c with a =10.2855（12）, b = 9.3606（11）, c = 20.436（3） A, β = 91.573°, V= 1966.8（4） A3, Z = 4, C20H22CoN3O5S, Mr = 475.40, Dc = 1.605 g/cm3, μ = 1.018 mm-1 and F（000） = 984. The complex possesses a uninodal three-connected hcb Shubnikov hexagonal plane structure with {63} topology. These planes are further linked into a 3D supramolecular network via O-H…O hydrogen bonds involving coordinated water molecules and oxygen atoms of chdc2- ligands. The fluorescence and catalytic activities of the complex for degradation of Congo red in a Fenton-like process were investigated.
文摘This article mainly reviews the problems of grammar teaching in rational and background.And according to the difficulties,a complete teaching designed,which is expected to be helpful to the teachers.
