Synthesis, Solid-State Structures, and EPR Spectroscopic Studies on Polycrystalline and Single-Crystal Samples of α-Diimine Cobalt(II) Complexes

Autores
Rosa, Vítor; González, Pablo Javier; Avilés, Teresa; Gomes, Pedro; Welter, Richard; Rizzi, Alberto Claudio; Passeggi, Mario Cesar Genaro; Brondino, Carlos Dante
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Cobalt compounds of the general formula [CoX2(a-diimine)], where X = Cl or I and the a-diimines are 1,4-diaryl-2,3-dimethyl- 1,4-diaza-1,3-butadiene (Ar-DAB) and bis(aryl)- acenaphthenequinonediimine (Ar-BIAN) were synthesized by the direct reaction of the anhydrous cobalt salts CoCl2 or CoI2 and the corresponding a-diimine ligand in dried CH2Cl2. The synthesized compounds are [Co(Ph-DAB)Cl2] (1a), [Co(o,o',p-Me3C6H2-DAB)Cl2] (1b), and [Co(o,o'- iPr2C6H3-DAB)Cl2] (1c) with the ligands Ar-DAB, and also [Co(o,o',p-Me3C6H2-BIAN)I2] (2'b) with the ligand Ar-BIAN. The crystal structures of all the compounds were solved by Introduction Cobalt is a 3d transition metal element that has been extensively studied over the last decades. Interest in cobalt compounds arises from their participation in many different processes, from industrial and technological applications as catalysts to the essential role in several biological systems of central importance in nature.[1–5] A large number of late transition metal complexes bearing a-diimine[6] ligands have been extensively studied in the commercial production of polyolefin from ethene and propene.[ 7,8] However, reports on cobalt complexes containing this type of ligands are still scarce.[9] Recently, some results from the insertion polymerization of ethylene have been reported using tetrahedral CoII complexes with related ligands.[ 10] a-Diimine ligands have also been the subject of different studies regarding the relative binding strengths,[11] as well as their reactivity with main group metals.[12] [a] REQUIMTE/CQFB, Departamento de Química, FCT, Universidade Nova de Lisboa, Caparica 2829-516, Portugal E-mail: tap@dq.fct.unl.pt [b] Centro de Química Estrutural, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal [c] Laboratoire DECOMET, ILB Université Louis Pasteur 4, rue Blaise Pascal, 67000 Strasbourg, France E-mail: welter@chimie.u-strasbg.fr [d] Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, C.C. 242, 3000 Santa Fe, Argentina E-mail: brondino@fbcb.unl.edu.ar [e] INTEC, Universidad Nacional del Litoral, Güemes 3450, 3000 Santa Fe, Argentina Eur. J. Inorg. Chem. 2006, 4761–4769 © 2006 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim 4761 single-crystal X-ray diffraction. In all cases the cobalt atom is in a distorted tetrahedron, which is built up of two halide atoms and two nitrogen atoms of the a-diimine ligand. Xband EPR measurements of polycrystalline samples performed on compounds 1b, 1c, and 2'b indicate a high-spin CoII ion (S = 3/2) in an axially distorted environment. Singlecrystal EPR experiments on compounds 1b and 1c allowed us to evaluate the orientation of the g tensor in the molecular frame.
Fil: Rosa, Vítor. Universidad Nova de Lisboa;
Fil: González, Pablo Javier. Universidad Nacional del Litoral; Argentina
Fil: Avilés, Teresa. Universidad Nova de Lisboa;
Fil: Gomes, Pedro. Instituto Superior Tecnico; Portugal
Fil: Welter, Richard. Universite Louis Pasteur; Francia
Fil: Rizzi, Alberto Claudio. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas. Departamento de Física; Argentina
Fil: Passeggi, Mario Cesar Genaro. 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: Brondino, Carlos Dante. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Epr
Co(Ii)
Complexes
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:11336/26537

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network_name_str CONICET Digital (CONICET)
spelling Synthesis, Solid-State Structures, and EPR Spectroscopic Studies on Polycrystalline and Single-Crystal Samples of α-Diimine Cobalt(II) ComplexesRosa, VítorGonzález, Pablo JavierAvilés, TeresaGomes, PedroWelter, RichardRizzi, Alberto ClaudioPasseggi, Mario Cesar GenaroBrondino, Carlos DanteEprCo(Ii)Complexeshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Cobalt compounds of the general formula [CoX2(a-diimine)], where X = Cl or I and the a-diimines are 1,4-diaryl-2,3-dimethyl- 1,4-diaza-1,3-butadiene (Ar-DAB) and bis(aryl)- acenaphthenequinonediimine (Ar-BIAN) were synthesized by the direct reaction of the anhydrous cobalt salts CoCl2 or CoI2 and the corresponding a-diimine ligand in dried CH2Cl2. The synthesized compounds are [Co(Ph-DAB)Cl2] (1a), [Co(o,o',p-Me3C6H2-DAB)Cl2] (1b), and [Co(o,o'- iPr2C6H3-DAB)Cl2] (1c) with the ligands Ar-DAB, and also [Co(o,o',p-Me3C6H2-BIAN)I2] (2'b) with the ligand Ar-BIAN. The crystal structures of all the compounds were solved by Introduction Cobalt is a 3d transition metal element that has been extensively studied over the last decades. Interest in cobalt compounds arises from their participation in many different processes, from industrial and technological applications as catalysts to the essential role in several biological systems of central importance in nature.[1–5] A large number of late transition metal complexes bearing a-diimine[6] ligands have been extensively studied in the commercial production of polyolefin from ethene and propene.[ 7,8] However, reports on cobalt complexes containing this type of ligands are still scarce.[9] Recently, some results from the insertion polymerization of ethylene have been reported using tetrahedral CoII complexes with related ligands.[ 10] a-Diimine ligands have also been the subject of different studies regarding the relative binding strengths,[11] as well as their reactivity with main group metals.[12] [a] REQUIMTE/CQFB, Departamento de Química, FCT, Universidade Nova de Lisboa, Caparica 2829-516, Portugal E-mail: tap@dq.fct.unl.pt [b] Centro de Química Estrutural, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal [c] Laboratoire DECOMET, ILB Université Louis Pasteur 4, rue Blaise Pascal, 67000 Strasbourg, France E-mail: welter@chimie.u-strasbg.fr [d] Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, C.C. 242, 3000 Santa Fe, Argentina E-mail: brondino@fbcb.unl.edu.ar [e] INTEC, Universidad Nacional del Litoral, Güemes 3450, 3000 Santa Fe, Argentina Eur. J. Inorg. Chem. 2006, 4761–4769 © 2006 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim 4761 single-crystal X-ray diffraction. In all cases the cobalt atom is in a distorted tetrahedron, which is built up of two halide atoms and two nitrogen atoms of the a-diimine ligand. Xband EPR measurements of polycrystalline samples performed on compounds 1b, 1c, and 2'b indicate a high-spin CoII ion (S = 3/2) in an axially distorted environment. Singlecrystal EPR experiments on compounds 1b and 1c allowed us to evaluate the orientation of the g tensor in the molecular frame.Fil: Rosa, Vítor. Universidad Nova de Lisboa;Fil: González, Pablo Javier. Universidad Nacional del Litoral; ArgentinaFil: Avilés, Teresa. Universidad Nova de Lisboa;Fil: Gomes, Pedro. Instituto Superior Tecnico; PortugalFil: Welter, Richard. Universite Louis Pasteur; FranciaFil: Rizzi, Alberto Claudio. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas. Departamento de Física; ArgentinaFil: Passeggi, Mario Cesar Genaro. 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: Brondino, Carlos Dante. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaWiley VCH Verlag2006-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/26537Rosa, Vítor; González, Pablo Javier; Avilés, Teresa; Gomes, Pedro; Welter, Richard; et al.; Synthesis, Solid-State Structures, and EPR Spectroscopic Studies on Polycrystalline and Single-Crystal Samples of α-Diimine Cobalt(II) Complexes; Wiley VCH Verlag; European Journal of Inorganic Chemistry; 2006; 23; 10-2006; 4761-47691434-1948CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www3.interscience.wiley.com/journal/113388781/abstractinfo:eu-repo/semantics/altIdentifier/doi/10.1002/ejic.200600448info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:46:56Zoai:ri.conicet.gov.ar:11336/26537instacron: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:34982025-09-03 09:46:56.993CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Synthesis, Solid-State Structures, and EPR Spectroscopic Studies on Polycrystalline and Single-Crystal Samples of α-Diimine Cobalt(II) Complexes
title Synthesis, Solid-State Structures, and EPR Spectroscopic Studies on Polycrystalline and Single-Crystal Samples of α-Diimine Cobalt(II) Complexes
spellingShingle Synthesis, Solid-State Structures, and EPR Spectroscopic Studies on Polycrystalline and Single-Crystal Samples of α-Diimine Cobalt(II) Complexes
Rosa, Vítor
Epr
Co(Ii)
Complexes
title_short Synthesis, Solid-State Structures, and EPR Spectroscopic Studies on Polycrystalline and Single-Crystal Samples of α-Diimine Cobalt(II) Complexes
title_full Synthesis, Solid-State Structures, and EPR Spectroscopic Studies on Polycrystalline and Single-Crystal Samples of α-Diimine Cobalt(II) Complexes
title_fullStr Synthesis, Solid-State Structures, and EPR Spectroscopic Studies on Polycrystalline and Single-Crystal Samples of α-Diimine Cobalt(II) Complexes
title_full_unstemmed Synthesis, Solid-State Structures, and EPR Spectroscopic Studies on Polycrystalline and Single-Crystal Samples of α-Diimine Cobalt(II) Complexes
title_sort Synthesis, Solid-State Structures, and EPR Spectroscopic Studies on Polycrystalline and Single-Crystal Samples of α-Diimine Cobalt(II) Complexes
dc.creator.none.fl_str_mv Rosa, Vítor
González, Pablo Javier
Avilés, Teresa
Gomes, Pedro
Welter, Richard
Rizzi, Alberto Claudio
Passeggi, Mario Cesar Genaro
Brondino, Carlos Dante
author Rosa, Vítor
author_facet Rosa, Vítor
González, Pablo Javier
Avilés, Teresa
Gomes, Pedro
Welter, Richard
Rizzi, Alberto Claudio
Passeggi, Mario Cesar Genaro
Brondino, Carlos Dante
author_role author
author2 González, Pablo Javier
Avilés, Teresa
Gomes, Pedro
Welter, Richard
Rizzi, Alberto Claudio
Passeggi, Mario Cesar Genaro
Brondino, Carlos Dante
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Epr
Co(Ii)
Complexes
topic Epr
Co(Ii)
Complexes
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Cobalt compounds of the general formula [CoX2(a-diimine)], where X = Cl or I and the a-diimines are 1,4-diaryl-2,3-dimethyl- 1,4-diaza-1,3-butadiene (Ar-DAB) and bis(aryl)- acenaphthenequinonediimine (Ar-BIAN) were synthesized by the direct reaction of the anhydrous cobalt salts CoCl2 or CoI2 and the corresponding a-diimine ligand in dried CH2Cl2. The synthesized compounds are [Co(Ph-DAB)Cl2] (1a), [Co(o,o',p-Me3C6H2-DAB)Cl2] (1b), and [Co(o,o'- iPr2C6H3-DAB)Cl2] (1c) with the ligands Ar-DAB, and also [Co(o,o',p-Me3C6H2-BIAN)I2] (2'b) with the ligand Ar-BIAN. The crystal structures of all the compounds were solved by Introduction Cobalt is a 3d transition metal element that has been extensively studied over the last decades. Interest in cobalt compounds arises from their participation in many different processes, from industrial and technological applications as catalysts to the essential role in several biological systems of central importance in nature.[1–5] A large number of late transition metal complexes bearing a-diimine[6] ligands have been extensively studied in the commercial production of polyolefin from ethene and propene.[ 7,8] However, reports on cobalt complexes containing this type of ligands are still scarce.[9] Recently, some results from the insertion polymerization of ethylene have been reported using tetrahedral CoII complexes with related ligands.[ 10] a-Diimine ligands have also been the subject of different studies regarding the relative binding strengths,[11] as well as their reactivity with main group metals.[12] [a] REQUIMTE/CQFB, Departamento de Química, FCT, Universidade Nova de Lisboa, Caparica 2829-516, Portugal E-mail: tap@dq.fct.unl.pt [b] Centro de Química Estrutural, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal [c] Laboratoire DECOMET, ILB Université Louis Pasteur 4, rue Blaise Pascal, 67000 Strasbourg, France E-mail: welter@chimie.u-strasbg.fr [d] Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, C.C. 242, 3000 Santa Fe, Argentina E-mail: brondino@fbcb.unl.edu.ar [e] INTEC, Universidad Nacional del Litoral, Güemes 3450, 3000 Santa Fe, Argentina Eur. J. Inorg. Chem. 2006, 4761–4769 © 2006 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim 4761 single-crystal X-ray diffraction. In all cases the cobalt atom is in a distorted tetrahedron, which is built up of two halide atoms and two nitrogen atoms of the a-diimine ligand. Xband EPR measurements of polycrystalline samples performed on compounds 1b, 1c, and 2'b indicate a high-spin CoII ion (S = 3/2) in an axially distorted environment. Singlecrystal EPR experiments on compounds 1b and 1c allowed us to evaluate the orientation of the g tensor in the molecular frame.
Fil: Rosa, Vítor. Universidad Nova de Lisboa;
Fil: González, Pablo Javier. Universidad Nacional del Litoral; Argentina
Fil: Avilés, Teresa. Universidad Nova de Lisboa;
Fil: Gomes, Pedro. Instituto Superior Tecnico; Portugal
Fil: Welter, Richard. Universite Louis Pasteur; Francia
Fil: Rizzi, Alberto Claudio. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas. Departamento de Física; Argentina
Fil: Passeggi, Mario Cesar Genaro. 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: Brondino, Carlos Dante. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Cobalt compounds of the general formula [CoX2(a-diimine)], where X = Cl or I and the a-diimines are 1,4-diaryl-2,3-dimethyl- 1,4-diaza-1,3-butadiene (Ar-DAB) and bis(aryl)- acenaphthenequinonediimine (Ar-BIAN) were synthesized by the direct reaction of the anhydrous cobalt salts CoCl2 or CoI2 and the corresponding a-diimine ligand in dried CH2Cl2. The synthesized compounds are [Co(Ph-DAB)Cl2] (1a), [Co(o,o',p-Me3C6H2-DAB)Cl2] (1b), and [Co(o,o'- iPr2C6H3-DAB)Cl2] (1c) with the ligands Ar-DAB, and also [Co(o,o',p-Me3C6H2-BIAN)I2] (2'b) with the ligand Ar-BIAN. The crystal structures of all the compounds were solved by Introduction Cobalt is a 3d transition metal element that has been extensively studied over the last decades. Interest in cobalt compounds arises from their participation in many different processes, from industrial and technological applications as catalysts to the essential role in several biological systems of central importance in nature.[1–5] A large number of late transition metal complexes bearing a-diimine[6] ligands have been extensively studied in the commercial production of polyolefin from ethene and propene.[ 7,8] However, reports on cobalt complexes containing this type of ligands are still scarce.[9] Recently, some results from the insertion polymerization of ethylene have been reported using tetrahedral CoII complexes with related ligands.[ 10] a-Diimine ligands have also been the subject of different studies regarding the relative binding strengths,[11] as well as their reactivity with main group metals.[12] [a] REQUIMTE/CQFB, Departamento de Química, FCT, Universidade Nova de Lisboa, Caparica 2829-516, Portugal E-mail: tap@dq.fct.unl.pt [b] Centro de Química Estrutural, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal [c] Laboratoire DECOMET, ILB Université Louis Pasteur 4, rue Blaise Pascal, 67000 Strasbourg, France E-mail: welter@chimie.u-strasbg.fr [d] Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, C.C. 242, 3000 Santa Fe, Argentina E-mail: brondino@fbcb.unl.edu.ar [e] INTEC, Universidad Nacional del Litoral, Güemes 3450, 3000 Santa Fe, Argentina Eur. J. Inorg. Chem. 2006, 4761–4769 © 2006 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim 4761 single-crystal X-ray diffraction. In all cases the cobalt atom is in a distorted tetrahedron, which is built up of two halide atoms and two nitrogen atoms of the a-diimine ligand. Xband EPR measurements of polycrystalline samples performed on compounds 1b, 1c, and 2'b indicate a high-spin CoII ion (S = 3/2) in an axially distorted environment. Singlecrystal EPR experiments on compounds 1b and 1c allowed us to evaluate the orientation of the g tensor in the molecular frame.
publishDate 2006
dc.date.none.fl_str_mv 2006-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/26537
Rosa, Vítor; González, Pablo Javier; Avilés, Teresa; Gomes, Pedro; Welter, Richard; et al.; Synthesis, Solid-State Structures, and EPR Spectroscopic Studies on Polycrystalline and Single-Crystal Samples of α-Diimine Cobalt(II) Complexes; Wiley VCH Verlag; European Journal of Inorganic Chemistry; 2006; 23; 10-2006; 4761-4769
1434-1948
CONICET Digital
CONICET
url http://hdl.handle.net/11336/26537
identifier_str_mv Rosa, Vítor; González, Pablo Javier; Avilés, Teresa; Gomes, Pedro; Welter, Richard; et al.; Synthesis, Solid-State Structures, and EPR Spectroscopic Studies on Polycrystalline and Single-Crystal Samples of α-Diimine Cobalt(II) Complexes; Wiley VCH Verlag; European Journal of Inorganic Chemistry; 2006; 23; 10-2006; 4761-4769
1434-1948
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
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dc.publisher.none.fl_str_mv Wiley VCH Verlag
publisher.none.fl_str_mv Wiley VCH Verlag
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