Synthesis, Solid-State Structures, and EPR Spectroscopic Studies on Polycrystalline and Single-Crystal Samples of α-Diimine Cobalt(II) Complexes
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 th...
| Autores: | , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2006 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/26537 |
| Acceso en línea: | http://hdl.handle.net/11336/26537 |
| Access Level: | acceso abierto |
| Palabra clave: | Epr Co(Ii) Complexes https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
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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 https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| 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 https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| topic |
Epr Co(Ii) Complexes https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| 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 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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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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info:eu-repo/semantics/altIdentifier/url/http://www3.interscience.wiley.com/journal/113388781/abstract info:eu-repo/semantics/altIdentifier/doi/10.1002/ejic.200600448 |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf |
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Wiley VCH Verlag |
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Wiley VCH Verlag |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1799194821856854016 |
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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 Técnicas2024-05-08T13:37:11Zoai: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:34982024-05-08 13:37:11.778CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
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