通过草酸钾(K2ox.H2O)、硝酸镉[Cd(NO3)2.4H2O]和1,10-邻菲咯啉(phen)在甲醇-水溶液中的反应合成了一种双核镉配合物[Cd2(phen)2ox(NO3)2(H2O)2],其结构经单晶X射线衍射表征.配合物属三斜晶系,P1空间群,晶胞参数:a=0.67629(14)nm,b=1.0051(2)nm,c=1.0527(2)nm,α=109.19(3)°,β=92.12(3)°,γ=93.48(3)°,V=0.6733(2)nm3,Z=1,D=2.055 g/cm3,F(000)=410,μ=1.660mm-1,R=0.0445,wR=0.0877.配合物为草酸根桥联的双核镉配合物,且草酸根C—C键中点为配合物的倒反中心,镉与ox2-,phen,NO3-和水配位.运用晶体场理论计算了其态密度,结果表明NO3-和phen对配合物的性质有重要影响.
A dinuclear Cd(Ⅱ) complex [Cd2(phen)2ox(NO3)2(H2O)2] was synthesized by mixing potassium oxalate(K2ox/5H2O),cadmium nitrate[Cd(NO3)2/54H2O] and 1,10-phenanthroline(phen) in methanol-water solution.The structure was characterized by X-ray single-crystal diffraction analysis.It belongs to triclinic system,P1 space group with a=0.67629(14) nm,b=1.0051(2) nm,c=1.0527(2) nm,α=109.19(3)°,β=92.12(3)°,γ=93.48(3)°,V=0.6733(2) nm3,Z=1,D=2.055 g/cm3,F(000)=410,μ=1.660 mm-1,R=0.0445,wR=0.0877.The analytical results indicate that it is an oxalate-bridged dinuclear Cd(Ⅱ) complex,the midpoint of carbon-carbon bond of oxalate is the center of inversion for the complex,Cd(Ⅱ) cation coordinates with ox2-,phen,NO-3 and H2O.The crystal field theory was used to calculate density of state(DOS) for the complex.Analysis results show that NO-3 and phen have important influence on the properties of the complex.