Coordination chemistry of Amine Bis(phenolate) Cobalt(II), Nickel(II), and Copper(II) complexes
Cobalt(II), nickel(II), and copper(II) (1, 2, and 3) complexes of the dianionic form of the bis(phenolate) ligand N,N-bis(3,4-dimethyl-2-hydroxybenzyl)-N‘,N‘-dimethylethylenediamine (H2L) have been synthesized by electrochemical oxidation of the appropriate metal in an acetonitrile solution of the l...
| Autores: | , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2006 |
| País: | España |
| Institución: | Universidad de Santiago de Compostela (USC) |
| Repositorio: | Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela |
| Idioma: | inglés |
| OAI Identifier: | oai:minerva.usc.gal:10347/46137 |
| Acceso en línea: | https://hdl.handle.net/10347/46137 |
| Access Level: | acceso abierto |
| Palabra clave: | Aromatic Compounds Ligands Metals Molecules Oxygen 2303 Química inorgánica |
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Coordination chemistry of Amine Bis(phenolate) Cobalt(II), Nickel(II), and Copper(II) complexesRodríguez Silva, LauraLabisbal Viqueira, María ElenaSousa Pedrares, AntonioGarcía Vázquez, José ArturoRomero López-Grado, JaimeDurán Carril, María LuzReal, José A.Sousa, AntonioAromatic CompoundsLigandsMetalsMoleculesOxygen2303 Química inorgánicaCobalt(II), nickel(II), and copper(II) (1, 2, and 3) complexes of the dianionic form of the bis(phenolate) ligand N,N-bis(3,4-dimethyl-2-hydroxybenzyl)-N‘,N‘-dimethylethylenediamine (H2L) have been synthesized by electrochemical oxidation of the appropriate metal in an acetonitrile solution of the ligand. When copper is used as the anode, the addition of 1,10-phenanthroline to the electrolytic phase gave rise to a different compound [CuL]2·2CH3CN (4). The compounds [CoL]2·2CH3CN (1), [Ni2L2(H2O)]·H2O (2), [CuL]2·3H2O (3), and [CuL]2·2CH3CN (4) were characterized by microanalysis, IR, electronic spectroscopy, FAB mass spectrometry, magnetic measurements and by single-crystal X-ray diffraction. The crystal structures show that the complexes have a dinuclear structure. In compounds 1, 3, and 4, two metal ions are coordinated by the two amine nitrogens and the two phenol oxygen atoms of a deprotonated pendant phenol ligand, with one phenolic oxygen atom from ligand acting as a bridge. In compounds 1 and 3, each metal center has a geometry that is closest to trigonal bipyramidal. Magnetic susceptibility data for both compounds show an antiferromagnetic coupling with 2J = −15 cm-1 for the cobalt(II) complex and a strong antiferromagnetic coupling with 2J = −654 cm-1 for the copper(II) complex. However, in 4 the geometry around the metal is closer to square pyramidal and the compound shows a lower antiferromagnetic coupling (2J = −90 cm-1) than in 3. The nickel atoms in the dimeric compound 2 are hexacoordinate. The NiN2O4 chromophore has a highly distorted octahedral geometry. In this structure, a dianionic ligand binds to one nickel through the two amine nitrogen atoms and the two oxygen atoms and to an adjacent nickel via one of these oxygen atoms. The nickel atoms are linked through a triple oxygen bridge involving two phenolic oxygens, each from a different ligand, and an oxygen atom from a water molecule. The two nickel ions in 2 are ferromagnetically coupled with 2J = 19.8 cm-1ACSUniversidade de Santiago de Compostela. Departamento de Química Inorgánica20062006-08-2320062006-08-23journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10347/46137reponame:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostelainstname:Universidad de Santiago de Compostela (USC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:minerva.usc.gal:10347/461372026-06-15T12:47:27Z |
| dc.title.none.fl_str_mv |
Coordination chemistry of Amine Bis(phenolate) Cobalt(II), Nickel(II), and Copper(II) complexes |
| title |
Coordination chemistry of Amine Bis(phenolate) Cobalt(II), Nickel(II), and Copper(II) complexes |
| spellingShingle |
Coordination chemistry of Amine Bis(phenolate) Cobalt(II), Nickel(II), and Copper(II) complexes Rodríguez Silva, Laura Aromatic Compounds Ligands Metals Molecules Oxygen 2303 Química inorgánica |
| title_short |
Coordination chemistry of Amine Bis(phenolate) Cobalt(II), Nickel(II), and Copper(II) complexes |
| title_full |
Coordination chemistry of Amine Bis(phenolate) Cobalt(II), Nickel(II), and Copper(II) complexes |
| title_fullStr |
Coordination chemistry of Amine Bis(phenolate) Cobalt(II), Nickel(II), and Copper(II) complexes |
| title_full_unstemmed |
Coordination chemistry of Amine Bis(phenolate) Cobalt(II), Nickel(II), and Copper(II) complexes |
| title_sort |
Coordination chemistry of Amine Bis(phenolate) Cobalt(II), Nickel(II), and Copper(II) complexes |
| dc.creator.none.fl_str_mv |
Rodríguez Silva, Laura Labisbal Viqueira, María Elena Sousa Pedrares, Antonio García Vázquez, José Arturo Romero López-Grado, Jaime Durán Carril, María Luz Real, José A. Sousa, Antonio |
| author |
Rodríguez Silva, Laura |
| author_facet |
Rodríguez Silva, Laura Labisbal Viqueira, María Elena Sousa Pedrares, Antonio García Vázquez, José Arturo Romero López-Grado, Jaime Durán Carril, María Luz Real, José A. Sousa, Antonio |
| author_role |
author |
| author2 |
Labisbal Viqueira, María Elena Sousa Pedrares, Antonio García Vázquez, José Arturo Romero López-Grado, Jaime Durán Carril, María Luz Real, José A. Sousa, Antonio |
| author2_role |
author author author author author author author |
| dc.contributor.none.fl_str_mv |
Universidade de Santiago de Compostela. Departamento de Química Inorgánica |
| dc.subject.none.fl_str_mv |
Aromatic Compounds Ligands Metals Molecules Oxygen 2303 Química inorgánica |
| topic |
Aromatic Compounds Ligands Metals Molecules Oxygen 2303 Química inorgánica |
| description |
Cobalt(II), nickel(II), and copper(II) (1, 2, and 3) complexes of the dianionic form of the bis(phenolate) ligand N,N-bis(3,4-dimethyl-2-hydroxybenzyl)-N‘,N‘-dimethylethylenediamine (H2L) have been synthesized by electrochemical oxidation of the appropriate metal in an acetonitrile solution of the ligand. When copper is used as the anode, the addition of 1,10-phenanthroline to the electrolytic phase gave rise to a different compound [CuL]2·2CH3CN (4). The compounds [CoL]2·2CH3CN (1), [Ni2L2(H2O)]·H2O (2), [CuL]2·3H2O (3), and [CuL]2·2CH3CN (4) were characterized by microanalysis, IR, electronic spectroscopy, FAB mass spectrometry, magnetic measurements and by single-crystal X-ray diffraction. The crystal structures show that the complexes have a dinuclear structure. In compounds 1, 3, and 4, two metal ions are coordinated by the two amine nitrogens and the two phenol oxygen atoms of a deprotonated pendant phenol ligand, with one phenolic oxygen atom from ligand acting as a bridge. In compounds 1 and 3, each metal center has a geometry that is closest to trigonal bipyramidal. Magnetic susceptibility data for both compounds show an antiferromagnetic coupling with 2J = −15 cm-1 for the cobalt(II) complex and a strong antiferromagnetic coupling with 2J = −654 cm-1 for the copper(II) complex. However, in 4 the geometry around the metal is closer to square pyramidal and the compound shows a lower antiferromagnetic coupling (2J = −90 cm-1) than in 3. The nickel atoms in the dimeric compound 2 are hexacoordinate. The NiN2O4 chromophore has a highly distorted octahedral geometry. In this structure, a dianionic ligand binds to one nickel through the two amine nitrogen atoms and the two oxygen atoms and to an adjacent nickel via one of these oxygen atoms. The nickel atoms are linked through a triple oxygen bridge involving two phenolic oxygens, each from a different ligand, and an oxygen atom from a water molecule. The two nickel ions in 2 are ferromagnetically coupled with 2J = 19.8 cm-1 |
| publishDate |
2006 |
| dc.date.none.fl_str_mv |
2006 2006-08-23 2006 2006-08-23 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 AM http://purl.org/coar/version/c_ab4af688f83e57aa |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/10347/46137 |
| url |
https://hdl.handle.net/10347/46137 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
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info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 |
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openAccess |
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application/pdf |
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ACS |
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ACS |
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reponame:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela instname:Universidad de Santiago de Compostela (USC) |
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Universidad de Santiago de Compostela (USC) |
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Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela |
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Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela |
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