Kinetics and Mechanism of Ligand Substitutionin Triglycinatovanadium(III) by EDTA and NTA in Aqueous Solutions
-
Published:1994
Issue:5
Volume:59
Page:1077-1085
-
ISSN:0010-0765
-
Container-title:Collection of Czechoslovak Chemical Communications
-
language:en
-
Short-container-title:Collect. Czech. Chem. Commun.
Author:
Ikeda Yasuhisa,Hassan Refat M.,Abd El-Fattah Moustafa M.,Park Yul Y.,Tomiyasu Hiroshi
Abstract
The kinetics of ligand substitution reactions in triglycinatovanadium(III) by EDTA and NTA as multidentate ligands were investigated at a constant ionic strength of 2.5 mol dm-3 spectrophotometrically. The substitutions were second-order reactions, first order in both reactants. Their rate could be expressed in the form r = k [V(gly)3] [EDTA(NTA)] where k = 2.62 .10-2 and 6.96 .10-2 mol-1 dm3 s-1 at 25 °C for EDTA and NTA, respectively. The results obtained at different pH indicated that [H2edta]2- and [Hnta]2- ions were the most reactive species in the substitution. Kinetic parameters have been evaluated and a tentative mechanism of the reaction has been proposed.
Publisher
Institute of Organic Chemistry & Biochemistry
Subject
General Chemistry
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献