摘要
A new three-dimensional coordination polymer {[Co(BPTC)0.5(bix)]′(H2O)}n (1, H4BPTC = 1,1′-biphenyl-2,2′,6,6′-tetracarboxylic acid, bix = 1,3-bis(imidazol-l-ylmethyl)-benzene) has been synthesized by the hydrothermal method and characterized by IR, elemental analysis, and single-crystal X-ray analysis. The crystal is of orthorhombic, space group Pbcn with a = 13.2975(10), b = 13.8424(12), c = 22.6367(17) A, CoC22H19N4Os, Mr = 478.34, V = 4166.7(6) A3, Dc = 1.525 g/cm^3, F(000) = 1968,μ = 0.867 mm^-1, S = 1.023 and Z = 8. The final R = 0.0683 and wR = 0.1529 for 3655 observed reflections with I 〉 20(I). In the title complex, the 2D Co-BPTC layer is formed through self-assembly of Co(II) ions and bridging BPTC4-ligands in a molar ratio of 2:1. The metal-organic lattice layers are further united together through the second bridging ligand bix to form a 3D metal-organic framework. The thermal stability of the title complex was studied by thermal gravimetric (TG) and differential thermal analysis (DTA).
A new three-dimensional coordination polymer {[Co(BPTC)0.5(bix)]′(H2O)}n (1, H4BPTC = 1,1′-biphenyl-2,2′,6,6′-tetracarboxylic acid, bix = 1,3-bis(imidazol-l-ylmethyl)-benzene) has been synthesized by the hydrothermal method and characterized by IR, elemental analysis, and single-crystal X-ray analysis. The crystal is of orthorhombic, space group Pbcn with a = 13.2975(10), b = 13.8424(12), c = 22.6367(17) A, CoC22H19N4Os, Mr = 478.34, V = 4166.7(6) A3, Dc = 1.525 g/cm^3, F(000) = 1968,μ = 0.867 mm^-1, S = 1.023 and Z = 8. The final R = 0.0683 and wR = 0.1529 for 3655 observed reflections with I 〉 20(I). In the title complex, the 2D Co-BPTC layer is formed through self-assembly of Co(II) ions and bridging BPTC4-ligands in a molar ratio of 2:1. The metal-organic lattice layers are further united together through the second bridging ligand bix to form a 3D metal-organic framework. The thermal stability of the title complex was studied by thermal gravimetric (TG) and differential thermal analysis (DTA).
基金
supported by the International Technology Cooperation Project of Science and Technology Department of Henan Province (No. 124300510050)