吡嗪-2,3,5,6-四甲酸及4,4′-联吡啶与ds-金属配合物合成、结构及发光性质（英文）

Syntheses, Structures, and Fluorescent Properties of Three ds-Block Metal Complexes with Pyrazine-2,3,5,6-tetracarboxylic Acid and 4,4′-Bipyridine

合成了3种金属配合物{[Cd(pztc)(H2O)2]·(H2bpy)·3(H2O)}n(1),{[Zn3(pztc)2(Hbpy)2(bpy)(H2O)4]·7H2O}n(2),[Cu6(pztc)4(Hbpy)4(bpy)2(H2O)8]·17H2O(3)(bpy=4,4′-联吡啶,H4pztc=吡嗪-2,3,5,6-四甲酸),并对其进行了红外光谱分析、元素分析、热重分析、荧光光谱分析和X-射线单晶衍射分析。其中1和3中存在丰富的氢键,2为3D网状结构,存在金鱼状(H2O)10水簇。3为由化学键连接成的1D链状结构,由氢键连接成3D超分子结构。当激发光波长为320 nm时,1和2的最大荧光发射峰分别在496 nm和494 nm。

Three coordination polymers {[Cd（pztc）（H2O）2]·（H2bpy）·3（H2O）}n（1）, {[Zn3（pztc）2（Hbpy）2（bpy）（H2O）4]·7H2O}n（2）, and [Cu6（pztc）4（Hbpy）4（bpy）2（H2O）8]·17H2O（3）（bpy =4,4′-bipyridine, H4 pztc =pyrazine-2,3,5,6-tetracarboxylic acid） have been synthesized and characterized by infrared spectra, elemental analysis, thermal analysis, fluorescence and single-crystal X-ray diffraction. The hydrogen bonding interactions in complexes 1 and3 are abundant. Complex 2 displays a 3D network and exists an interesting goldfish-like（H2O）10cluster. Complex3 shows 1D herringbone chain structures, which can be linked by hydrogen bonds to form a 3D supramolecular structure. In addition, on excitation of 320 nm, complexes 1 and 2 emit fluorescence with emission maximum at496 nm and 494 nm respectively. CCDC： 888444, 1; 888445, 2; 888446, 3.