Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/73588
Type: Artigo de periódico
Title: The kinetics and mechanism of the reaction of ZINCON, o-[1-(2-hydroxy-5-sulfophenyl)-3-phenyl-5-formazane] benzoic acid, with Zn2+, Cu2+, and [Zn2++Cu2+] equimolar mixtures
Author: Rossi, AV
Tubino, M
Abstract: The kinetics and mechanism of the reactions between ZINCON and Zn2+, Cu2+ and Zn2+ Cu2+ equimolar mixtures were studied. The reactions were performed in aqueous solution (pH = 9.0) and monitored spectrophotometrically at 610 nn. The rates of the reactions were determined using the stopped-flow technique. The mechanistic model proposed to explain these reactions assumes OH- and/or H2O bridges involving polymeric species of Zn2+ and Cu2+ in the aqueous solution. The reaction between the metal cations and ZINCON can be described as occurring in two general steps: i) an initial very fast reaction between the OH-/H2O bridges or solvation water molecules of the cations and the oxygen atoms of the ligand; and ii) the binding of the cations to the nitrogen of the ligand, forming the ZINCON-cation complex.
Subject: ZINCON complexes
complex formation kinetics
stopped-flow kinetics
Country: Brasil
Editor: Soc Brasileira Quimica
Rights: aberto
Date Issue: 1996
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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