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Kinetic study of nickel(II) complexation by pteroylglutamic acid

Document type: Articulo

Abstract

The kinetics of the complexation of NiII by pteroylglutamic acid have been studied in the 545 ∘C range, the ionic strength (0.6 M) being regulated with KNO3, in the 5.5–7.0pH range, using the stopped-flow method. Under the experimental conditions two processes were observed. The faster process was detected in the millisecond range and is associated with the reaction between NiII and the ligand. The slower is observed within a few seconds. Complementary equilibrium studies were made at 25 ∘C. The results are consistent with the formation of a 1:1 complex between the reactants, and a mechanism is proposed to account for the observed behaviour. Equilibrium constants for the NiII plus pteroylglutamic acid system, as well as activation parameters, are reported.

General information

Issue date: 1997
Document language: English
Journal: Transition Metal Chemistry; vol. 22, no. 6
Origin: Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
ISSN: 0340-4285; 1572-901X
Pages: 541-544
Subjects: Química

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Created: 22 de agosto de 2022
Available since: 22 de agosto de 2022
Please, use one of this identificators(URI) for cite o linking this item:
  • http://sedici.unlp.edu.ar/handle/10915/140834
  • https://doi.org/10.1023/a:1018544220350

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    Creative Commons Attribution 4.0 International (CC BY 4.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution 4.0 International (CC BY 4.0)