乙二胺双缩5-甲基-3-羧基水杨醛镍(Ⅱ)配合物的合成与晶体结构

Synthesis and crystal structure of nickel(Ⅱ) complex of N,N′-bis(5-methyl-3-carboxylsalicylidene)-ethylenediamine

合成了乙二胺双缩5-甲基-3-羧基水杨醛Schiff碱(H2EMS)镍(Ⅱ)配合物Ni(EMS),利用红外光谱、紫外-可见光谱和单晶X射线衍射分析了配合物的组成和结构.结果表明,合成的配合物Ni(EMS)属于单斜晶系,空间群为C2/c,其晶胞参数为:a=1.933 85(17)nm,b=0.974 24(9)nm,c=0.951 86(9)nm,β=91.084(2)°,V=1.793 02(28)nm3,Z=4,Mr=441.07,Dc=1.633 83g/cm3,F(000)=912,μ=1.126mm-1,R1=0.035 2,wR2=0.081 5,S=1.027.配合物中的镍离子采取四配位方式,处于平面正方形配位环境中.

The title complex Ni（EMS）[H2 EMS = N, N＇-bis（5-methyl-3-carboxylsalicylidene）- ethylene diamine] was synthesized. Its crystal structure was confirmed by infrared spectrometry, ultraviolet-visible light spectrometry, and single crystal X-ray diffraction. Results indicate that as-prepared title complex belongs to monoclinic system of space group C2/c, with unit cell parameters ofa = 1.933 85（17） nm, b = 0.974 24（9） nm, c = 0.951 86（9） nm, fl = 91.084 （2）°, V = 1.793 02（28） nm3, Z = 4, Mr= 441.07, De= 1. 633 83 g/cm3, F（000） = 912, /1 1. 126 mm-1 , R1 = 0.035 2, wR2 = 0. 081 5, and S = 1. 027. The Ni（ Ⅱ） ion in the complex is coordinated with two oxygen atoms and two nitrogen atoms in a square planar manner.