Abstract

AbstractThe kinetic stopped flow method has been used to study the reaction rates of Ni(II) and Pd(II) with methioninehydroxamate (MX). Two reaction rates were observed in the MXNi(II) system whereas three rates were observed in the MXPd(II) system. Most of the rate steps were dependent on pH as well as on TMX (total concentration of methioninehydroxamate). The observed pseudo‐first‐order rate constants at constant pH are expressed empirically as k = mi + m′i TMX. The parameters mi and m′i are pH‐dependent. It has been concluded that hydroxy metal species contributed to the explanation of the rate of the metal complexation with MX. Similar systems have been correlated with the systems of current work. © 1995 John Wiley & Sons, Inc.

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