Gadolinium and Neodymium Citrates: Evidence for Weak Ferromagnetic Exchange between Gadolinium(III) Cations

Autores
Baggio, Ricardo; Calvo, Rafael; Garland, María; Peña, Octavio; Perec, Mireille; Rizzi, Alberto Claudio
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A new lanthanide citrate motif of general formula [Ln(Hcit)(H2O)2âH2O]n, where Ln ) Gd (1) and Nd (2) and Hcit3- ) C(OH)(COO-)(CH2COO-)2, has been synthesized hydrothermally from Ln2O3 and citric acid at 100 °C and characterized by elemental analysis, IR, TG-DTA, single-crystal X-ray diffraction, and magnetic measurements. The structures can be seen as “ladder chains” along the a axis, with dinuclear Ln2O2 units serving as “steps” and R-COO groups as “uprights”, which are connected by H bonds. The magnetic susceptibility between 2 and 300 K and the magnetization at 2 K, as a function of magnetic field between 0 and 5 T, were measured for both compounds. By modeling the magnetic behavior of the Gd compound with a dinuclear Hamiltonian HS ) gíB(SA + SB)Bo - JoSASB (SA ) SB ) 7/2), a ferromagnetic exchange interaction Jo ) 0.039 cm-1 was evaluated between Gd ions situated at do ) 4.321 Å in dinuclear units bridged by two symmetry-related tridentate carboxylate oxygens. The EPR spectrum of the Gd compound is discussed. The temperature dependence of the susceptibility of the Nd compound is caused by the depopulation of the excited crystal-field levels when the temperature decreases. The magnetic-field dependence of the magnetization of 2 is attributed to the ground-state Kramers’ doublet populated at 2 K. The g factor of this ground-state doublet is calculated from the data and compared with values for other compounds reported in the literature.
Fil: Baggio, Ricardo. Comisión Nacional de Energía Atómica; Argentina
Fil: Calvo, Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Garland, María. Universidad de Chile; Chile
Fil: Peña, Octavio. Universite de Rennes I; Francia
Fil: Perec, Mireille. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Rizzi, Alberto Claudio. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas. Departamento de Física; Argentina
Materia
Epr
Gadolinium, Neodymium
Citrates
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/26637
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/26637
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Gadolinium and Neodymium Citrates: Evidence for Weak Ferromagnetic Exchange between Gadolinium(III) CationsBaggio, RicardoCalvo, RafaelGarland, MaríaPeña, OctavioPerec, MireilleRizzi, Alberto ClaudioEprGadolinium, NeodymiumCitrateshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1A new lanthanide citrate motif of general formula [Ln(Hcit)(H2O)2âH2O]n, where Ln ) Gd (1) and Nd (2) and Hcit3- ) C(OH)(COO-)(CH2COO-)2, has been synthesized hydrothermally from Ln2O3 and citric acid at 100 °C and characterized by elemental analysis, IR, TG-DTA, single-crystal X-ray diffraction, and magnetic measurements. The structures can be seen as “ladder chains” along the a axis, with dinuclear Ln2O2 units serving as “steps” and R-COO groups as “uprights”, which are connected by H bonds. The magnetic susceptibility between 2 and 300 K and the magnetization at 2 K, as a function of magnetic field between 0 and 5 T, were measured for both compounds. By modeling the magnetic behavior of the Gd compound with a dinuclear Hamiltonian HS ) gíB(SA + SB)Bo - JoSASB (SA ) SB ) 7/2), a ferromagnetic exchange interaction Jo ) 0.039 cm-1 was evaluated between Gd ions situated at do ) 4.321 Å in dinuclear units bridged by two symmetry-related tridentate carboxylate oxygens. The EPR spectrum of the Gd compound is discussed. The temperature dependence of the susceptibility of the Nd compound is caused by the depopulation of the excited crystal-field levels when the temperature decreases. The magnetic-field dependence of the magnetization of 2 is attributed to the ground-state Kramers’ doublet populated at 2 K. The g factor of this ground-state doublet is calculated from the data and compared with values for other compounds reported in the literature.Fil: Baggio, Ricardo. Comisión Nacional de Energía Atómica; ArgentinaFil: Calvo, Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Garland, María. Universidad de Chile; ChileFil: Peña, Octavio. Universite de Rennes I; FranciaFil: Perec, Mireille. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaFil: Rizzi, Alberto Claudio. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas. Departamento de Física; ArgentinaAmerican Chemical Society2005-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/26637Baggio, Ricardo; Calvo, Rafael; Garland, María; Peña, Octavio; Perec, Mireille; et al.; Gadolinium and Neodymium Citrates: Evidence for Weak Ferromagnetic Exchange between Gadolinium(III) Cations; American Chemical Society; Inorganic Chemistry; 45; 24; 12-2005; 8979-89870020-1669CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/ic0510056info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/ic0510056info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T10:48:53Zoai:ri.conicet.gov.ar:11336/26637instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-17 10:48:53.496CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Gadolinium and Neodymium Citrates: Evidence for Weak Ferromagnetic Exchange between Gadolinium(III) Cations
title Gadolinium and Neodymium Citrates: Evidence for Weak Ferromagnetic Exchange between Gadolinium(III) Cations
spellingShingle Gadolinium and Neodymium Citrates: Evidence for Weak Ferromagnetic Exchange between Gadolinium(III) Cations
Baggio, Ricardo
Epr
Gadolinium, Neodymium
Citrates
title_short Gadolinium and Neodymium Citrates: Evidence for Weak Ferromagnetic Exchange between Gadolinium(III) Cations
title_full Gadolinium and Neodymium Citrates: Evidence for Weak Ferromagnetic Exchange between Gadolinium(III) Cations
title_fullStr Gadolinium and Neodymium Citrates: Evidence for Weak Ferromagnetic Exchange between Gadolinium(III) Cations
title_full_unstemmed Gadolinium and Neodymium Citrates: Evidence for Weak Ferromagnetic Exchange between Gadolinium(III) Cations
title_sort Gadolinium and Neodymium Citrates: Evidence for Weak Ferromagnetic Exchange between Gadolinium(III) Cations
dc.creator.none.fl_str_mv Baggio, Ricardo
Calvo, Rafael
Garland, María
Peña, Octavio
Perec, Mireille
Rizzi, Alberto Claudio
author Baggio, Ricardo
author_facet Baggio, Ricardo
Calvo, Rafael
Garland, María
Peña, Octavio
Perec, Mireille
Rizzi, Alberto Claudio
author_role author
author2 Calvo, Rafael
Garland, María
Peña, Octavio
Perec, Mireille
Rizzi, Alberto Claudio
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Epr
Gadolinium, Neodymium
Citrates
topic Epr
Gadolinium, Neodymium
Citrates
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A new lanthanide citrate motif of general formula [Ln(Hcit)(H2O)2âH2O]n, where Ln ) Gd (1) and Nd (2) and Hcit3- ) C(OH)(COO-)(CH2COO-)2, has been synthesized hydrothermally from Ln2O3 and citric acid at 100 °C and characterized by elemental analysis, IR, TG-DTA, single-crystal X-ray diffraction, and magnetic measurements. The structures can be seen as “ladder chains” along the a axis, with dinuclear Ln2O2 units serving as “steps” and R-COO groups as “uprights”, which are connected by H bonds. The magnetic susceptibility between 2 and 300 K and the magnetization at 2 K, as a function of magnetic field between 0 and 5 T, were measured for both compounds. By modeling the magnetic behavior of the Gd compound with a dinuclear Hamiltonian HS ) gíB(SA + SB)Bo - JoSASB (SA ) SB ) 7/2), a ferromagnetic exchange interaction Jo ) 0.039 cm-1 was evaluated between Gd ions situated at do ) 4.321 Å in dinuclear units bridged by two symmetry-related tridentate carboxylate oxygens. The EPR spectrum of the Gd compound is discussed. The temperature dependence of the susceptibility of the Nd compound is caused by the depopulation of the excited crystal-field levels when the temperature decreases. The magnetic-field dependence of the magnetization of 2 is attributed to the ground-state Kramers’ doublet populated at 2 K. The g factor of this ground-state doublet is calculated from the data and compared with values for other compounds reported in the literature.
Fil: Baggio, Ricardo. Comisión Nacional de Energía Atómica; Argentina
Fil: Calvo, Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Garland, María. Universidad de Chile; Chile
Fil: Peña, Octavio. Universite de Rennes I; Francia
Fil: Perec, Mireille. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Rizzi, Alberto Claudio. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas. Departamento de Física; Argentina
description A new lanthanide citrate motif of general formula [Ln(Hcit)(H2O)2âH2O]n, where Ln ) Gd (1) and Nd (2) and Hcit3- ) C(OH)(COO-)(CH2COO-)2, has been synthesized hydrothermally from Ln2O3 and citric acid at 100 °C and characterized by elemental analysis, IR, TG-DTA, single-crystal X-ray diffraction, and magnetic measurements. The structures can be seen as “ladder chains” along the a axis, with dinuclear Ln2O2 units serving as “steps” and R-COO groups as “uprights”, which are connected by H bonds. The magnetic susceptibility between 2 and 300 K and the magnetization at 2 K, as a function of magnetic field between 0 and 5 T, were measured for both compounds. By modeling the magnetic behavior of the Gd compound with a dinuclear Hamiltonian HS ) gíB(SA + SB)Bo - JoSASB (SA ) SB ) 7/2), a ferromagnetic exchange interaction Jo ) 0.039 cm-1 was evaluated between Gd ions situated at do ) 4.321 Å in dinuclear units bridged by two symmetry-related tridentate carboxylate oxygens. The EPR spectrum of the Gd compound is discussed. The temperature dependence of the susceptibility of the Nd compound is caused by the depopulation of the excited crystal-field levels when the temperature decreases. The magnetic-field dependence of the magnetization of 2 is attributed to the ground-state Kramers’ doublet populated at 2 K. The g factor of this ground-state doublet is calculated from the data and compared with values for other compounds reported in the literature.
publishDate 2005
dc.date.none.fl_str_mv 2005-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/26637
Baggio, Ricardo; Calvo, Rafael; Garland, María; Peña, Octavio; Perec, Mireille; et al.; Gadolinium and Neodymium Citrates: Evidence for Weak Ferromagnetic Exchange between Gadolinium(III) Cations; American Chemical Society; Inorganic Chemistry; 45; 24; 12-2005; 8979-8987
0020-1669
CONICET Digital
CONICET
url http://hdl.handle.net/11336/26637
identifier_str_mv Baggio, Ricardo; Calvo, Rafael; Garland, María; Peña, Octavio; Perec, Mireille; et al.; Gadolinium and Neodymium Citrates: Evidence for Weak Ferromagnetic Exchange between Gadolinium(III) Cations; American Chemical Society; Inorganic Chemistry; 45; 24; 12-2005; 8979-8987
0020-1669
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1021/ic0510056
info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/ic0510056
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.001348

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