Copper(II) complexes of imino-bis(methyl phosphonic acid) with some bio-relevant ligands. Equilibrium studies and hydrolysis of glycine methyl ester through complex formation

被引：28

作者：

El-Sherif, AA ^{[1
]}

Shoukry, MM ^{[1
]}

机构：

[1] Cairo Univ, Fac Sci, Dept Chem, Giza, Egypt

来源：

JOURNAL OF COORDINATION CHEMISTRY | 2005年 / 58卷 / 16期

关键词：

Cu(II); imino-bis(methyl phosphonic acid); amino acids; glycine methyl ester; hydrolysis; equilibria;

D O I：

10.1080/00958970500055435

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Binary and ternary complexes of Cu(II) involving imino-bis(methyl phosphonic acid) (IdP) abbreviated as H(4)A and some selected bio-ligands, amino acids, peptides and DNA constituents (L), were examined. Cu(II) forms CuA and CuAH complexes with IdP. Ternary complexes are formed in a stepwise mechanism whereby iminodiphosphonic acid binds to Cu(II), followed by coordination of amino acid, peptide or DNA. The concentration distribution of the various complex species has been evaluated. The kinetics of base hydrolysis of glycine methyl ester in the presence of Cu(II)-IdP was studied in aqueous solution at different temperatures, and in dioxane-water solutions of different compositions at 25 degrees C. The activation parameters are evaluated and discussed.

引用

页码：1401 / 1415

页数：15

共 55 条

[1] REACTIONS OF COORDINATED LIGANDS .13. COBALT(3)-PROMOTED HYDROLYSIS OF GLYCINE ESTERS [J].