摘要
A novel 3D hetero-nuclear framework,namely [K_2Cd_5(Hbptc)_4(H_2O)_(12)·12H_2O]_n(1,H4 bptc = biphenyl-2,3,3?,5?-tetracarboxylic acid),was obtained by hydrothermal reaction. X-ray singlecrystal structure analysis reveals that polymer 1 crystallizes in orthorhombic,space group Pbcn with a = 26.6152(13),b = 11.7449(5),c = 29.5923(14) ?,V = 9250.3(7) ?~3,C_(64)H_(76)Cd_5K_2O_(56),Mr = 2381.44,Dc = 1.710 g/cm^3,μ(MoK α) = 1.323 mm^(-1),F(000) = 4744,Z = 4,the final R = 0.0668 and wR = 0.1135 for 10613 observed reflections(I > 2σ(I)). Polymer 1 displays a 3D network that is built on the unprecedented heterobimetallic [Cd_3Cd_2K] molecular building block with a(3,4)-connected(6·8·8)2(6·6·82·82·126·126) topology which represents a rare 2-fold interpenetrating 3D framework topology network. The luminescence analyses reveal that polymer 1 shows obvious emission at room temperature in the solid state. In addition,it was also characterized by elemental,IR spectra and TG analyses.
A novel 3D hetero-nuclear framework,namely [K_2Cd_5（Hbptc）_4（H_2O）_（12）·12H_2O]_n（1,H4 bptc = biphenyl-2,3,3？,5？-tetracarboxylic acid）,was obtained by hydrothermal reaction. X-ray singlecrystal structure analysis reveals that polymer 1 crystallizes in orthorhombic,space group Pbcn with a = 26.6152（13）,b = 11.7449（5）,c = 29.5923（14） ？,V = 9250.3（7） ？~3,C_（64）H_（76）Cd_5K_2O_（56）,Mr = 2381.44,Dc = 1.710 g/cm^3,μ（MoK α） = 1.323 mm^（-1）,F（000） = 4744,Z = 4,the final R = 0.0668 and wR = 0.1135 for 10613 observed reflections（I 〉 2σ（I））. Polymer 1 displays a 3D network that is built on the unprecedented heterobimetallic [Cd_3Cd_2K] molecular building block with a（3,4）-connected（6·8·8）2（6·6·82·82·126·126） topology which represents a rare 2-fold interpenetrating 3D framework topology network. The luminescence analyses reveal that polymer 1 shows obvious emission at room temperature in the solid state. In addition,it was also characterized by elemental,IR spectra and TG analyses.
基金
supported by the National Natural Science Foundation of China(No.21273101 and 21302082)
the Program for Science&Technology Innovation Talents in Universities of Henan Province(2014HASTIT014,14IRTSTHN008 and 164100510012)
the Tackle Key Problem of Science and Technology Project of Henan Province(No.142102310483)
