吡啶-2-甲醛缩邻氨基苯磺酸Ni(Ⅱ)配合物的合成、表征和晶体结构

Synthesis,characterization and crystal structure of nickle(Ⅱ) complex with(E)-2-(( pyridin-2-ylmethylene) amino) benzenesulfonic acid

在甲醇和水的混合溶剂中,以Ni(NO_3)_2·6H_2O和吡啶-2-甲醛缩邻氨基苯磺酸席夫碱反应合成了一个新的配合物[Ni(OBSP)(SCN)(H_2O)_2](HOBSP=吡啶-2-甲醛缩邻氨基苯磺酸),并采用元素分析、红外光谱和X-射线单晶衍射法进行了结构表征。结果表明标题配合物属于单斜晶系,P2(1)/c空间群,a=1.17217(13)nm,b=0.97165(11)nm,c=1.48019(16)nm,β=90.9950(10),V=1.6856(3)nm^3,Z=4,Dc=1.632g·cm^(-3),s=1.069,R_1=0.0247,wR_2=0.0625。标题配合物拥有一个以N3O3六配位的镍(III)中心,从而形成一个畸变的八面体构型,其中一个SCN-、两个水分子和一个以N,O,O'-三齿螯合方式的磺酸类席夫碱参与配位。在配合物中,大量的氢键和π-π堆积有益于三维结构的形成和稳定(CCDC 1567210)。

A new complex[Ni( OBSP)( SCN)(H_2O)_2][HOBSP = 2-(( pyridin-2-ylmethylene) amino) benzenesulfonic acid]was synthesized by the reaction of Ni(NO_3)_2·6 H_2O with Pyridine-2-carboxaldehyde-2-aminobenzene Sulfonic acid in the CH_3OHH_2O solution and further was characterized by element analysis,IR and X-ray diffraction single crystal structure analysis.The results show that the title complex belongs to Monoclinic,space group P2( 1)/c with a = 1. 17217( 13) nm,b = 0. 97165( 11) nm,c =1. 48019( 16) nm,β = 90. 9950( 10),V = 1. 6856( 3) nm^3,Z= 4,Dc= 1. 632 g·cm^(-3),s = 1. 069,R^1= 0. 0247,wR^2= 0. 0625. The title complex act as a six-coordinated nickle( II) center with a N_3O_3 distorted octahedral coordination construction,in which one SCN-,two water molecules and the sulfonate-derived Schiff base serves as a common N,O,O'-tridentate participates in coordination.In the complex,abundant hydrogen bonds and π-π stacks are benefit to the formation and the stability of the three dimension construction.