Structure and Luminescent Properties of the First Cadmium Complex with Isophthalate and Di-pyrazole Ligands

The title complex [Cd(IPA)L(H2O)]n(1,H2IPA = isophthalic acid,L = 1,4-bis(pyra-zole-1-ylmethyl)benzene) has been hydrothermally synthesized,and characterized by elemental analyses,IR spectroscopy,TGA and X-ray single-crystal diffraction.It crystallizes in the triclinic system,space group P1 with a = 9.3060(6),b = 10.2374(7),c = 11.9706(8) ,α = 73.804(6),β = 77.883(5),γ = 85.942(5)°,V = 1070.7(1) 3,Z = 2,C22H20CdN4O5,Mr = 532.82,Dc = 1.653 g/cm3,μ = 1.062 mm-1,λ(MoKα) = 0.71073 ,F(000) = 536,R = 0.0392 and wR = 0.0640 for 3751 observed reflections with I > 2σ(I).Crystal structure analysis showed that complex 1 has a 1D double chain structure,which is assembled together through strong O-H...O hydrogen bonding interactions between coordinated water molecules and carboxylate groups of isophthalate to form a 2D supramolecular network.In addition,the solid-state fluorescent spectrum of 1 exhibits strong emission at 364 nm.     

基于均苯三酸和柔性双咪唑配体的一个铜的金属有机骨架合成、表征及催化性质

水热条件下,合成了新的金属有机骨架[Cu(Hbtc)(bmix)_0.5]_n(1)(H₃btc=1,3,5-苯三甲酸,bmix=1,4-二(2-甲基咪唑基-1-亚甲基)苯)。单晶X射线衍射分析表明,该配合物属正交晶系,Pbcn空间群,晶胞参数为a=1.436 30(9) nm,b=1.477 15(11) nm,c=1.543 48(10) nm,V=3.274 7(4) nm³,Z=8。配合物1中,Hbtc^2-以四连接方式与铜中心配位,bmix桥连配体进一步修饰网络结构,最终1显示为1个(4,5)节点的三维的网络结构,其Schl?fli 符号为(4²·5·6²·8)(4²·5³·6³·7·8)。此外还研究了配合物的热稳定性和对光助类芬顿反应降解甲基橙的催化性质。