Spectrophotometric determination of the formation constants of Calcium(Ⅱ) complexes with 1,2-ethylenediamine,1,3-propanediamine and 1,4-butanediamine in acetonitrile

• 作者: Jacqueline González González José J.N.Segoviano-Garfias Juan Antonio Ramírez-Vázquez Mónica Nájera-Lara Varinia López-Ramírez
• 来源期刊: 绿色能源与环境：英文版
• 学科: 化学
• 年，卷（期）: 2017,（1）
• 页码范围: 51-57
• 页数: 7页
• 分类号: O641.4

摘要

In this work, with the purpose to explore the coordination chemistry of calcium complexes which could work as a partial model of manganese-calcium cluster, a spectrophotometric study to evaluate the stability of the complexes: Calcium（Ⅱ）-1,2-ethylendiamine, Calcium（Ⅱ）-1,3-propanediamine and Calcium（Ⅱ）-1,4-butanediamine in acetonitrile, were carried on. By processing the spectrophotometric data with the HypSpec program allows the determination of the formation constants. The logarithmic values of the formation constants obtained for Calcium（Ⅱ）-1,2-ethylendiamine, Calcium（Ⅱ）-1,3-propanediamine and Calcium（Ⅱ）-1,4-butanediamine were log β110 = 4.69, log β110= 5.25 and log β110 = 4.072, respectively.