钕(Ⅲ)离子与2,4-二甲基苯甲酸、2,2′-联吡啶配合物的合成和晶体结构

Synthesis and Crystal Structure of Nd(Ⅲ) Complex with 2,4-Dimethylbenzooic acid and 2,2′-Bipyridine

合成了新的配合物{[Nd2(2,4-DMBA)6(b ipy)2].5.5H2O}(DMBA:二甲基苯甲酸;b ipy:2,2′-联吡啶)。X射线晶体衍射分析确定了配合物的晶体结构。配合物属于三斜晶系,Pī空间群。晶胞参数,a=1.121 96(15)nm,b=1.236 39(17)nm,c=1.594 5(2)nm,α=69.636(2)°,β=71.641(2)°,γ=83.271(2)°。M=797.45,V=1.960(7)nm3,Z=2,Dcalc=1.351 Mg/m3。4个2,4-二甲基苯甲酸根桥联2个钕离子形成双核分子。金属离子的配位数为9。

Complex { [ bid2 （2,4-DMBA） 6 （bipy） 2 ] 5.5 H2O} was synthesized （ 2,4-DMBA： 2,4-dimethyl- benzoate; bipy ：2,2′-bipyridine）. The crystal structure of the complex was determined by the X-ray diffraction method. The complex crystallized in the triclinic system with space group Pi, a = 1. 121 96（15） nm, b = 1.23639（17） nm, c=1.594 5（2） nm, α=69.636（2）°, β=71.641（2）°, γ=83.271（2）°. M= 797.45, V=1.960（7） nm^3, Z =2, Dcale = 1.351 Mg/m^3. Two metal ions were bridged by four carboxyl groups of 2,4-dimethylbenzoate, forming a binuclear complex. The coordination number of the metal ion is nine.