1D Magnetic Interactions in CuII Oxovanadium Phosphates, Magnetic Susceptibility, DFT and Single Crystal EPR

Autores
Venegas-Yazigi, Diego; Spodine, Evgenia; Saldias, Marianela; Vega, Andrés; Paredes-García, Verónica; Calvo, Rafael; Santana, Ricardo C.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We report the crystal face indexing and molecular spatial orientation, magnetic properties, electron paramagnetic resonance (EPR) spectra, and density functional theory (DFT) calculations of two previously reported oxovanadium phosphates functionalized with CuII complexes, namely, [Cu(bipy)(VO2)(PO4)]n (1) and [{Cu(phen)}2(VO2(H2O)2)(H2PO4)2 (PO4)]n (2), where bipy = 2,2′-bipyridine and phen = 1,10-phenanthroline, obtained by a new synthetic route allowing the growth of single crystals appropriate for the EPR measurements. Compounds 1 and 2 crystallize in the triclinic group P1¯and in the orthorhombic Pccn group, respectively, containing dinuclear copper units connected by two -O-P-O- bridges in 1 and by a single -O-P-O- bridge in 2, further connected through -O-P-O-V-O- bridges. We emphasize in our work the structural aspects related to the chemical paths that determine the magnetic properties. Magnetic susceptibility data indicate bulk antiferromagnetism for both compounds, allowing to calculate J = -43.0 cm-1 (dCu-Cu = 5.07 Å; J defined as Hex(i,j) = -J Si·Sj), considering dinuclear units for 1, and J = -1.44 cm-1 (dCu-Cu = 3.47 Å) using the molecular field approximation for 2. The single-crystal EPR study allows evaluation of the g matrices, which provide a better understanding of the electronic structure. The absence of structure of the EPR spectra arising from the dinuclear character of the compounds allows estimation of weak additional exchange couplings |J′| > 0.3 cm-1 for 1 (dCu-Cu = 5.54 Å) and a smaller value of |J′| 0.15 cm-1 for 2 (dCu-Cu = 6.59 Å). DFT calculations allow evaluating two different exchange couplings for each compound, specifically, J = -36.60 cm-1 (dCu-Cu = 5.07 Å) and J′ = 0.20 cm-1 (dCu-Cu =5.54 Å) for 1 and J = -1.10 cm-1 (dCu-Cu =3.47 Å) and J′ = 0.01 cm-1 (dCu-Cu = 6.59 Å) for 2, this last value being in the range of the uncertainties of the calculations. Thus, these values are in good agreement with those provided by magnetic and single-crystal EPR measurements.
Fil: Venegas-Yazigi, Diego. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile. Universidad de Santiago de Chile; Chile
Fil: Spodine, Evgenia. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile. Universidad de Chile; Chile
Fil: Saldias, Marianela. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile. Universidad de Chile; Chile
Fil: Vega, Andrés. Universidad Andrés Bello; Chile. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile
Fil: Paredes-García, Verónica. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile. Universidad Andrés Bello; Chile
Fil: Calvo, Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; Argentina
Fil: Santana, Ricardo C.. Universidade Federal de Goiás; Brasil
Materia
Materiales
Magnetismo
Epr
Dft
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:11336/78614

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oai_identifier_str oai:ri.conicet.gov.ar:11336/78614
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling 1D Magnetic Interactions in CuII Oxovanadium Phosphates, Magnetic Susceptibility, DFT and Single Crystal EPRVenegas-Yazigi, DiegoSpodine, EvgeniaSaldias, MarianelaVega, AndrésParedes-García, VerónicaCalvo, RafaelSantana, Ricardo C.MaterialesMagnetismoEprDftWe report the crystal face indexing and molecular spatial orientation, magnetic properties, electron paramagnetic resonance (EPR) spectra, and density functional theory (DFT) calculations of two previously reported oxovanadium phosphates functionalized with CuII complexes, namely, [Cu(bipy)(VO2)(PO4)]n (1) and [{Cu(phen)}2(VO2(H2O)2)(H2PO4)2 (PO4)]n (2), where bipy = 2,2′-bipyridine and phen = 1,10-phenanthroline, obtained by a new synthetic route allowing the growth of single crystals appropriate for the EPR measurements. Compounds 1 and 2 crystallize in the triclinic group P1¯and in the orthorhombic Pccn group, respectively, containing dinuclear copper units connected by two -O-P-O- bridges in 1 and by a single -O-P-O- bridge in 2, further connected through -O-P-O-V-O- bridges. We emphasize in our work the structural aspects related to the chemical paths that determine the magnetic properties. Magnetic susceptibility data indicate bulk antiferromagnetism for both compounds, allowing to calculate J = -43.0 cm-1 (dCu-Cu = 5.07 Å; J defined as Hex(i,j) = -J Si·Sj), considering dinuclear units for 1, and J = -1.44 cm-1 (dCu-Cu = 3.47 Å) using the molecular field approximation for 2. The single-crystal EPR study allows evaluation of the g matrices, which provide a better understanding of the electronic structure. The absence of structure of the EPR spectra arising from the dinuclear character of the compounds allows estimation of weak additional exchange couplings |J′| > 0.3 cm-1 for 1 (dCu-Cu = 5.54 Å) and a smaller value of |J′| 0.15 cm-1 for 2 (dCu-Cu = 6.59 Å). DFT calculations allow evaluating two different exchange couplings for each compound, specifically, J = -36.60 cm-1 (dCu-Cu = 5.07 Å) and J′ = 0.20 cm-1 (dCu-Cu =5.54 Å) for 1 and J = -1.10 cm-1 (dCu-Cu =3.47 Å) and J′ = 0.01 cm-1 (dCu-Cu = 6.59 Å) for 2, this last value being in the range of the uncertainties of the calculations. Thus, these values are in good agreement with those provided by magnetic and single-crystal EPR measurements.Fil: Venegas-Yazigi, Diego. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile. Universidad de Santiago de Chile; ChileFil: Spodine, Evgenia. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile. Universidad de Chile; ChileFil: Saldias, Marianela. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile. Universidad de Chile; ChileFil: Vega, Andrés. Universidad Andrés Bello; Chile. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; ChileFil: Paredes-García, Verónica. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile. Universidad Andrés Bello; ChileFil: Calvo, Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; ArgentinaFil: Santana, Ricardo C.. Universidade Federal de Goiás; BrasilAmerican Chemical Society2015-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/78614Venegas-Yazigi, Diego; Spodine, Evgenia; Saldias, Marianela; Vega, Andrés; Paredes-García, Verónica; et al.; 1D Magnetic Interactions in CuII Oxovanadium Phosphates, Magnetic Susceptibility, DFT and Single Crystal EPR; American Chemical Society; Inorganic Chemistry; 54; 8; 4-2015; 3805-38140020-1669CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/ic503045dinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:16:47Zoai:ri.conicet.gov.ar:11336/78614instacron: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:34982025-09-29 10:16:48.009CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv 1D Magnetic Interactions in CuII Oxovanadium Phosphates, Magnetic Susceptibility, DFT and Single Crystal EPR
title 1D Magnetic Interactions in CuII Oxovanadium Phosphates, Magnetic Susceptibility, DFT and Single Crystal EPR
spellingShingle 1D Magnetic Interactions in CuII Oxovanadium Phosphates, Magnetic Susceptibility, DFT and Single Crystal EPR
Venegas-Yazigi, Diego
Materiales
Magnetismo
Epr
Dft
title_short 1D Magnetic Interactions in CuII Oxovanadium Phosphates, Magnetic Susceptibility, DFT and Single Crystal EPR
title_full 1D Magnetic Interactions in CuII Oxovanadium Phosphates, Magnetic Susceptibility, DFT and Single Crystal EPR
title_fullStr 1D Magnetic Interactions in CuII Oxovanadium Phosphates, Magnetic Susceptibility, DFT and Single Crystal EPR
title_full_unstemmed 1D Magnetic Interactions in CuII Oxovanadium Phosphates, Magnetic Susceptibility, DFT and Single Crystal EPR
title_sort 1D Magnetic Interactions in CuII Oxovanadium Phosphates, Magnetic Susceptibility, DFT and Single Crystal EPR
dc.creator.none.fl_str_mv Venegas-Yazigi, Diego
Spodine, Evgenia
Saldias, Marianela
Vega, Andrés
Paredes-García, Verónica
Calvo, Rafael
Santana, Ricardo C.
author Venegas-Yazigi, Diego
author_facet Venegas-Yazigi, Diego
Spodine, Evgenia
Saldias, Marianela
Vega, Andrés
Paredes-García, Verónica
Calvo, Rafael
Santana, Ricardo C.
author_role author
author2 Spodine, Evgenia
Saldias, Marianela
Vega, Andrés
Paredes-García, Verónica
Calvo, Rafael
Santana, Ricardo C.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Materiales
Magnetismo
Epr
Dft
topic Materiales
Magnetismo
Epr
Dft
dc.description.none.fl_txt_mv We report the crystal face indexing and molecular spatial orientation, magnetic properties, electron paramagnetic resonance (EPR) spectra, and density functional theory (DFT) calculations of two previously reported oxovanadium phosphates functionalized with CuII complexes, namely, [Cu(bipy)(VO2)(PO4)]n (1) and [{Cu(phen)}2(VO2(H2O)2)(H2PO4)2 (PO4)]n (2), where bipy = 2,2′-bipyridine and phen = 1,10-phenanthroline, obtained by a new synthetic route allowing the growth of single crystals appropriate for the EPR measurements. Compounds 1 and 2 crystallize in the triclinic group P1¯and in the orthorhombic Pccn group, respectively, containing dinuclear copper units connected by two -O-P-O- bridges in 1 and by a single -O-P-O- bridge in 2, further connected through -O-P-O-V-O- bridges. We emphasize in our work the structural aspects related to the chemical paths that determine the magnetic properties. Magnetic susceptibility data indicate bulk antiferromagnetism for both compounds, allowing to calculate J = -43.0 cm-1 (dCu-Cu = 5.07 Å; J defined as Hex(i,j) = -J Si·Sj), considering dinuclear units for 1, and J = -1.44 cm-1 (dCu-Cu = 3.47 Å) using the molecular field approximation for 2. The single-crystal EPR study allows evaluation of the g matrices, which provide a better understanding of the electronic structure. The absence of structure of the EPR spectra arising from the dinuclear character of the compounds allows estimation of weak additional exchange couplings |J′| > 0.3 cm-1 for 1 (dCu-Cu = 5.54 Å) and a smaller value of |J′| 0.15 cm-1 for 2 (dCu-Cu = 6.59 Å). DFT calculations allow evaluating two different exchange couplings for each compound, specifically, J = -36.60 cm-1 (dCu-Cu = 5.07 Å) and J′ = 0.20 cm-1 (dCu-Cu =5.54 Å) for 1 and J = -1.10 cm-1 (dCu-Cu =3.47 Å) and J′ = 0.01 cm-1 (dCu-Cu = 6.59 Å) for 2, this last value being in the range of the uncertainties of the calculations. Thus, these values are in good agreement with those provided by magnetic and single-crystal EPR measurements.
Fil: Venegas-Yazigi, Diego. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile. Universidad de Santiago de Chile; Chile
Fil: Spodine, Evgenia. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile. Universidad de Chile; Chile
Fil: Saldias, Marianela. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile. Universidad de Chile; Chile
Fil: Vega, Andrés. Universidad Andrés Bello; Chile. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile
Fil: Paredes-García, Verónica. Centro Para El Desarrollo de la Nanociencia y Nanotecnología; Chile. Universidad Andrés Bello; Chile
Fil: Calvo, Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; Argentina
Fil: Santana, Ricardo C.. Universidade Federal de Goiás; Brasil
description We report the crystal face indexing and molecular spatial orientation, magnetic properties, electron paramagnetic resonance (EPR) spectra, and density functional theory (DFT) calculations of two previously reported oxovanadium phosphates functionalized with CuII complexes, namely, [Cu(bipy)(VO2)(PO4)]n (1) and [{Cu(phen)}2(VO2(H2O)2)(H2PO4)2 (PO4)]n (2), where bipy = 2,2′-bipyridine and phen = 1,10-phenanthroline, obtained by a new synthetic route allowing the growth of single crystals appropriate for the EPR measurements. Compounds 1 and 2 crystallize in the triclinic group P1¯and in the orthorhombic Pccn group, respectively, containing dinuclear copper units connected by two -O-P-O- bridges in 1 and by a single -O-P-O- bridge in 2, further connected through -O-P-O-V-O- bridges. We emphasize in our work the structural aspects related to the chemical paths that determine the magnetic properties. Magnetic susceptibility data indicate bulk antiferromagnetism for both compounds, allowing to calculate J = -43.0 cm-1 (dCu-Cu = 5.07 Å; J defined as Hex(i,j) = -J Si·Sj), considering dinuclear units for 1, and J = -1.44 cm-1 (dCu-Cu = 3.47 Å) using the molecular field approximation for 2. The single-crystal EPR study allows evaluation of the g matrices, which provide a better understanding of the electronic structure. The absence of structure of the EPR spectra arising from the dinuclear character of the compounds allows estimation of weak additional exchange couplings |J′| > 0.3 cm-1 for 1 (dCu-Cu = 5.54 Å) and a smaller value of |J′| 0.15 cm-1 for 2 (dCu-Cu = 6.59 Å). DFT calculations allow evaluating two different exchange couplings for each compound, specifically, J = -36.60 cm-1 (dCu-Cu = 5.07 Å) and J′ = 0.20 cm-1 (dCu-Cu =5.54 Å) for 1 and J = -1.10 cm-1 (dCu-Cu =3.47 Å) and J′ = 0.01 cm-1 (dCu-Cu = 6.59 Å) for 2, this last value being in the range of the uncertainties of the calculations. Thus, these values are in good agreement with those provided by magnetic and single-crystal EPR measurements.
publishDate 2015
dc.date.none.fl_str_mv 2015-04
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/11336/78614
Venegas-Yazigi, Diego; Spodine, Evgenia; Saldias, Marianela; Vega, Andrés; Paredes-García, Verónica; et al.; 1D Magnetic Interactions in CuII Oxovanadium Phosphates, Magnetic Susceptibility, DFT and Single Crystal EPR; American Chemical Society; Inorganic Chemistry; 54; 8; 4-2015; 3805-3814
0020-1669
CONICET Digital
CONICET
url http://hdl.handle.net/11336/78614
identifier_str_mv Venegas-Yazigi, Diego; Spodine, Evgenia; Saldias, Marianela; Vega, Andrés; Paredes-García, Verónica; et al.; 1D Magnetic Interactions in CuII Oxovanadium Phosphates, Magnetic Susceptibility, DFT and Single Crystal EPR; American Chemical Society; Inorganic Chemistry; 54; 8; 4-2015; 3805-3814
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/ic503045d
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
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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