Authors: Ahmed A ElSherif
Publish Date: 2012/02/08
Volume: 41, Issue: 2, Pages: 249-260
Abstract
The kinetics of base hydrolysis of the alanine ethyl ester in addition to glycine histidine and methionine methyl esters in the presence of the ZnNTP complex were studied in aqueous solution by the pHpotentiometric technique where NTP denotes the nitrilotrismethyl phosphonic acid ligand The kinetic data fits assumed that hydrolysis proceeds through formation of a M–OH complex followed by an intramolecular OH− attack The effect of an organic solvent on the hydrolysis of coordinated esters was investigated by measuring the rate of hydrolysis in dioxane–water solutions of different compositions at t=250 °C and I=01 mol⋅dm−3 The kinetics of base hydrolysis of the glycine methyl ester was studied at different temperatures Activation parameters for the base hydrolysis of the complexes were evaluated
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