Kinetic study of nickel(II) complexation by pteroylglutamic acid

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 d...

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Detalles Bibliográficos
Autores principales: Thomas, Andrés Héctor, Wolcan, Ezequiel, Féliz, Mario Rubén, Capparelli, Alberto Luis
Formato: Articulo
Lenguaje:Inglés
Publicado: 1997
Materias:
Química
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/140834
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-140834
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
spellingShingle Química
Thomas, Andrés Héctor
Wolcan, Ezequiel
Féliz, Mario Rubén
Capparelli, Alberto Luis
Kinetic study of nickel(II) complexation by pteroylglutamic acid
topic_facet Química
description 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.
format Articulo
Articulo
author Thomas, Andrés Héctor
Wolcan, Ezequiel
Féliz, Mario Rubén
Capparelli, Alberto Luis
author_facet Thomas, Andrés Héctor
Wolcan, Ezequiel
Féliz, Mario Rubén
Capparelli, Alberto Luis
author_sort Thomas, Andrés Héctor
title Kinetic study of nickel(II) complexation by pteroylglutamic acid
title_short Kinetic study of nickel(II) complexation by pteroylglutamic acid
title_full Kinetic study of nickel(II) complexation by pteroylglutamic acid
title_fullStr Kinetic study of nickel(II) complexation by pteroylglutamic acid
title_full_unstemmed Kinetic study of nickel(II) complexation by pteroylglutamic acid
title_sort kinetic study of nickel(ii) complexation by pteroylglutamic acid
publishDate 1997
url http://sedici.unlp.edu.ar/handle/10915/140834
work_keys_str_mv AT thomasandreshector kineticstudyofnickeliicomplexationbypteroylglutamicacid
AT wolcanezequiel kineticstudyofnickeliicomplexationbypteroylglutamicacid
AT felizmarioruben kineticstudyofnickeliicomplexationbypteroylglutamicacid
AT capparellialbertoluis kineticstudyofnickeliicomplexationbypteroylglutamicacid
bdutipo_str Repositorios
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