EPR, magnetic and spectral studies of copper(II) and nickel(II) complexes of schiff base macrocyclic ligand derived from thiosemicarbazide and glyoxal
作者:Sulekh Chandra、X. Sangeetika
DOI:10.1016/s1386-1425(03)00220-8
日期:2004.1
NO(3)(-), (1)/(2)SO(4)(2-)] and ML(4) (where metal salt used to synthesize complex is copper acetate and nickel thiocyanate) have been synthesized. The complexes were characterized on the basis of elemental analysis, molar conductance, magnetic susceptibility, IR, electronic, 1H NMR, mass and EPR spectral studies. The complexes from H(2)L(4) show different stoichiometry ratio and with a variable grade of
一个新的大环希夫碱1,2,5,6,8,11-六氮杂环十二烷基-7,12-二硫酮-2,4,8,10-四烯(H(2)L(4))含硫半脲并首次具有相当高的收成率。大环配体(H(2)L(4))是由乙醇中的六氢乙氧基-4-乙氧基-2-硫-2,3,5-三嗪(H(2)L(3))和氯化铜作为模板制备的使用高稀释技术。大环配体的配合物,其一般组成为M(H(2)L(4))X(2)[其中M = Cu(II)或Ni(II);H(2)L(4)= 1,2,5,6,8,11-六氮杂环十二碳-7,12-二硫酮-2,4,8,10-四烯; X = Cl(-),NO(3)(-),(1)/(2)SO(4)(2-)]和ML(4)(其中用于合成配合物的金属盐是乙酸铜和硫氰酸镍)已合成。根据元素分析,摩尔电导,磁化率,IR,电子,1H NMR,质量和EPR光谱研究。H(2)L(4)的配合物显示不同的化学计量比,并且配体中的质子化程度不同,具体取决于所用的盐和工作条件。