Spectroscopic studies on some azo compounds and their cobalt, copper and nickel complexes
作者:Mamdouh.S. Masoud、Ekram A. Khalil、Ahmed M. Hindawy、Alaa E. Ali、Eman F. Mohamed
DOI:10.1016/j.saa.2004.01.019
日期:2004.10
[o-carboxy phenylazo] moiety of barbituric acid, thiobarbituric acid, thiouracil, citrazinic acid, and disodium chromotropate and their complexes derived from cobalt (II), nickel (II), and copper (II) salts were done. The stereochemistry and the mode of bonding of the complexes were achieved based on elemental analysis, NMR, UV-Vis, IR and ESR. The dissociation constants of the free azo ligands are evaluated
合成和表征了巴比妥酸,硫代巴比妥酸,硫尿嘧啶,柑桔酸和邻苯二甲酸二钠二钠的[o-羧基苯基偶氮]部分及其衍生自钴(II),镍(II)和铜(II)盐的配合物。基于元素分析,NMR,UV-Vis,IR和ESR,实现了配合物的立体化学和键合方式。通过分光光度法评估游离偶氮配体的解离常数。