科研之友
微信
新浪微博
Facebook
分享链接
摘要
Reaction of divalent metal ions, Cu-II, Ni-II, Zn-II, Co-II and Cd-II with ligand L (L = trimethylene-diaminetetraacetic acid) for binary and ternary complexes were potentiometrically investigated in aqueous solution at 30 +/- 0.1 degrees C and I = 0.1 M (NaNO3). The binary (1 : 1, 2 : 1) and ternary (1 : 1 : 1) complexes of ligand were formed in a simultaneous manner. In homo bimetallic system the formation of M2L complexes occurred without formation of ML complexes while the formations of hetero bimetallic complexes follow the formation of binary ML complexes. The observed concentration of species formation of binary and ternary complexes obtained by SCOGS computer program and plotted using Origin 6.1. The stability constants of complexes were calculated by SCOGS computer programe using potentiometric pH-metric titration values. The relative stabilities of the ternary complexes were found higher compared to corresponding binary complexes in terms of log beta(pqrt) values.
- 出版日期2016-7
