Kinetic study of nickel(II) complexation by pteroylglutamic acid

Autores
Thomas, Andrés Héctor; Wolcan, Ezequiel; Féliz, Mario Rubén; Capparelli, Alberto Luis
Año de publicación
1997
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Química
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/140834
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/140834
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Kinetic study of nickel(II) complexation by pteroylglutamic acidThomas, Andrés HéctorWolcan, EzequielFéliz, Mario RubénCapparelli, Alberto LuisQuímicaThe 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.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1997info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf541-544http://sedici.unlp.edu.ar/handle/10915/140834enginfo:eu-repo/semantics/altIdentifier/issn/0340-4285info:eu-repo/semantics/altIdentifier/issn/1572-901Xinfo:eu-repo/semantics/altIdentifier/doi/10.1023/a:1018544220350info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:31:53Zoai:sedici.unlp.edu.ar:10915/140834Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:31:53.389SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Kinetic study of nickel(II) complexation by pteroylglutamic acid
title Kinetic study of nickel(II) complexation by pteroylglutamic acid
spellingShingle Kinetic study of nickel(II) complexation by pteroylglutamic acid
Thomas, Andrés Héctor
Química
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
dc.creator.none.fl_str_mv Thomas, Andrés Héctor
Wolcan, Ezequiel
Féliz, Mario Rubén
Capparelli, Alberto Luis
author Thomas, Andrés Héctor
author_facet Thomas, Andrés Héctor
Wolcan, Ezequiel
Féliz, Mario Rubén
Capparelli, Alberto Luis
author_role author
author2 Wolcan, Ezequiel
Féliz, Mario Rubén
Capparelli, Alberto Luis
author2_role author
author
author
dc.subject.none.fl_str_mv Química
topic Química
dc.description.none.fl_txt_mv 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.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
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.
publishDate 1997
dc.date.none.fl_str_mv 1997
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/140834
url http://sedici.unlp.edu.ar/handle/10915/140834
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0340-4285
info:eu-repo/semantics/altIdentifier/issn/1572-901X
info:eu-repo/semantics/altIdentifier/doi/10.1023/a:1018544220350
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
541-544
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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