Four chromophores in one building block: Synthesis, structure and characterization of trans -[Ru(MQ)4Cl2]4+ and trans -[Ru(4,4-bpy)4Cl2] (MQ+ = N-methyl-4,4-bipyridinium, bpy = bip...

Autores
Cadranel, Alejandro; Hodak, Jose Hector
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We report the synthesis, crystal structure, electrochemical and spectroscopic properties of trans-[Ru(MQ)4Cl2]4+ (14+), where MQ+ = N-methyl-4,4′-bipyridinium. The crystal structure of 14+ shows the pyridinic rings bound in a trans fashion to the Ru ion. In 14+ and in its analog trans-[Ru(4,4′-bpy)4Cl2] (2, bpy = bipyridine), the electrochemical reduction waves of the four iminic ligands occur at very closely spaced potentials. In comparison with previously reported analogues, 14+ and 2 present high molar extinction coefficients (ε = 20,000-50,000 M-1cm-1), and red-shifted absorptions (up to 800 nm for 14+ and up to 600 nm for 2) in acetonitrile. Upon protonation of the four exposed nitrogens of 2 and electrochemical reduction of the ligands in 14+ and 2, spectral changes occur with retention of isosbestic points, revealing the presence of four independent chromophores. These results suggest poor electronic communication between the aromatic ligands within each compound, in contrast to related complexes such as cis-[Ru(2,2′-bpy)2Cl2] (3).
Fil: Cadranel, Alejandro. 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. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; Argentina
Fil: Hodak, Jose Hector. 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. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; Argentina
Materia
N-Methyl-4,4′-Bipyridinium
Red Sensitization
Ruthenium Tetrapyridine
Supramolecular Building Block
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:11336/83662
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/83662
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Four chromophores in one building block: Synthesis, structure and characterization of trans -[Ru(MQ)4Cl2]4+ and trans -[Ru(4,4-bpy)4Cl2] (MQ+ = N-methyl-4,4-bipyridinium, bpy = bipyridine)Cadranel, AlejandroHodak, Jose HectorN-Methyl-4,4′-BipyridiniumRed SensitizationRuthenium TetrapyridineSupramolecular Building Blockhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1We report the synthesis, crystal structure, electrochemical and spectroscopic properties of trans-[Ru(MQ)4Cl2]4+ (14+), where MQ+ = N-methyl-4,4′-bipyridinium. The crystal structure of 14+ shows the pyridinic rings bound in a trans fashion to the Ru ion. In 14+ and in its analog trans-[Ru(4,4′-bpy)4Cl2] (2, bpy = bipyridine), the electrochemical reduction waves of the four iminic ligands occur at very closely spaced potentials. In comparison with previously reported analogues, 14+ and 2 present high molar extinction coefficients (ε = 20,000-50,000 M-1cm-1), and red-shifted absorptions (up to 800 nm for 14+ and up to 600 nm for 2) in acetonitrile. Upon protonation of the four exposed nitrogens of 2 and electrochemical reduction of the ligands in 14+ and 2, spectral changes occur with retention of isosbestic points, revealing the presence of four independent chromophores. These results suggest poor electronic communication between the aromatic ligands within each compound, in contrast to related complexes such as cis-[Ru(2,2′-bpy)2Cl2] (3).Fil: Cadranel, Alejandro. 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. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; ArgentinaFil: Hodak, Jose Hector. 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. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; ArgentinaTaylor & Francis Ltd2015-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/83662Cadranel, Alejandro; Hodak, Jose Hector; Four chromophores in one building block: Synthesis, structure and characterization of trans -[Ru(MQ)4Cl2]4+ and trans -[Ru(4,4-bpy)4Cl2] (MQ+ = N-methyl-4,4-bipyridinium, bpy = bipyridine); Taylor & Francis Ltd; Journal of Coordination Chemistry; 68; 8; 2-2015; 1452-14640095-8972CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1080/00958972.2015.1014351info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/00958972.2015.1014351info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:14:03Zoai:ri.conicet.gov.ar:11336/83662instacron: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:34982025-10-15 15:14:04.151CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Four chromophores in one building block: Synthesis, structure and characterization of trans -[Ru(MQ)4Cl2]4+ and trans -[Ru(4,4-bpy)4Cl2] (MQ+ = N-methyl-4,4-bipyridinium, bpy = bipyridine)
title Four chromophores in one building block: Synthesis, structure and characterization of trans -[Ru(MQ)4Cl2]4+ and trans -[Ru(4,4-bpy)4Cl2] (MQ+ = N-methyl-4,4-bipyridinium, bpy = bipyridine)
spellingShingle Four chromophores in one building block: Synthesis, structure and characterization of trans -[Ru(MQ)4Cl2]4+ and trans -[Ru(4,4-bpy)4Cl2] (MQ+ = N-methyl-4,4-bipyridinium, bpy = bipyridine)
Cadranel, Alejandro
N-Methyl-4,4′-Bipyridinium
Red Sensitization
Ruthenium Tetrapyridine
Supramolecular Building Block
title_short Four chromophores in one building block: Synthesis, structure and characterization of trans -[Ru(MQ)4Cl2]4+ and trans -[Ru(4,4-bpy)4Cl2] (MQ+ = N-methyl-4,4-bipyridinium, bpy = bipyridine)
title_full Four chromophores in one building block: Synthesis, structure and characterization of trans -[Ru(MQ)4Cl2]4+ and trans -[Ru(4,4-bpy)4Cl2] (MQ+ = N-methyl-4,4-bipyridinium, bpy = bipyridine)
title_fullStr Four chromophores in one building block: Synthesis, structure and characterization of trans -[Ru(MQ)4Cl2]4+ and trans -[Ru(4,4-bpy)4Cl2] (MQ+ = N-methyl-4,4-bipyridinium, bpy = bipyridine)
title_full_unstemmed Four chromophores in one building block: Synthesis, structure and characterization of trans -[Ru(MQ)4Cl2]4+ and trans -[Ru(4,4-bpy)4Cl2] (MQ+ = N-methyl-4,4-bipyridinium, bpy = bipyridine)
title_sort Four chromophores in one building block: Synthesis, structure and characterization of trans -[Ru(MQ)4Cl2]4+ and trans -[Ru(4,4-bpy)4Cl2] (MQ+ = N-methyl-4,4-bipyridinium, bpy = bipyridine)
dc.creator.none.fl_str_mv Cadranel, Alejandro
Hodak, Jose Hector
author Cadranel, Alejandro
author_facet Cadranel, Alejandro
Hodak, Jose Hector
author_role author
author2 Hodak, Jose Hector
author2_role author
dc.subject.none.fl_str_mv N-Methyl-4,4′-Bipyridinium
Red Sensitization
Ruthenium Tetrapyridine
Supramolecular Building Block
topic N-Methyl-4,4′-Bipyridinium
Red Sensitization
Ruthenium Tetrapyridine
Supramolecular Building Block
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We report the synthesis, crystal structure, electrochemical and spectroscopic properties of trans-[Ru(MQ)4Cl2]4+ (14+), where MQ+ = N-methyl-4,4′-bipyridinium. The crystal structure of 14+ shows the pyridinic rings bound in a trans fashion to the Ru ion. In 14+ and in its analog trans-[Ru(4,4′-bpy)4Cl2] (2, bpy = bipyridine), the electrochemical reduction waves of the four iminic ligands occur at very closely spaced potentials. In comparison with previously reported analogues, 14+ and 2 present high molar extinction coefficients (ε = 20,000-50,000 M-1cm-1), and red-shifted absorptions (up to 800 nm for 14+ and up to 600 nm for 2) in acetonitrile. Upon protonation of the four exposed nitrogens of 2 and electrochemical reduction of the ligands in 14+ and 2, spectral changes occur with retention of isosbestic points, revealing the presence of four independent chromophores. These results suggest poor electronic communication between the aromatic ligands within each compound, in contrast to related complexes such as cis-[Ru(2,2′-bpy)2Cl2] (3).
Fil: Cadranel, Alejandro. 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. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; Argentina
Fil: Hodak, Jose Hector. 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. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; Argentina
description We report the synthesis, crystal structure, electrochemical and spectroscopic properties of trans-[Ru(MQ)4Cl2]4+ (14+), where MQ+ = N-methyl-4,4′-bipyridinium. The crystal structure of 14+ shows the pyridinic rings bound in a trans fashion to the Ru ion. In 14+ and in its analog trans-[Ru(4,4′-bpy)4Cl2] (2, bpy = bipyridine), the electrochemical reduction waves of the four iminic ligands occur at very closely spaced potentials. In comparison with previously reported analogues, 14+ and 2 present high molar extinction coefficients (ε = 20,000-50,000 M-1cm-1), and red-shifted absorptions (up to 800 nm for 14+ and up to 600 nm for 2) in acetonitrile. Upon protonation of the four exposed nitrogens of 2 and electrochemical reduction of the ligands in 14+ and 2, spectral changes occur with retention of isosbestic points, revealing the presence of four independent chromophores. These results suggest poor electronic communication between the aromatic ligands within each compound, in contrast to related complexes such as cis-[Ru(2,2′-bpy)2Cl2] (3).
publishDate 2015
dc.date.none.fl_str_mv 2015-02
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/11336/83662
Cadranel, Alejandro; Hodak, Jose Hector; Four chromophores in one building block: Synthesis, structure and characterization of trans -[Ru(MQ)4Cl2]4+ and trans -[Ru(4,4-bpy)4Cl2] (MQ+ = N-methyl-4,4-bipyridinium, bpy = bipyridine); Taylor & Francis Ltd; Journal of Coordination Chemistry; 68; 8; 2-2015; 1452-1464
0095-8972
CONICET Digital
CONICET
url http://hdl.handle.net/11336/83662
identifier_str_mv Cadranel, Alejandro; Hodak, Jose Hector; Four chromophores in one building block: Synthesis, structure and characterization of trans -[Ru(MQ)4Cl2]4+ and trans -[Ru(4,4-bpy)4Cl2] (MQ+ = N-methyl-4,4-bipyridinium, bpy = bipyridine); Taylor & Francis Ltd; Journal of Coordination Chemistry; 68; 8; 2-2015; 1452-1464
0095-8972
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1080/00958972.2015.1014351
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/00958972.2015.1014351
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
dc.publisher.none.fl_str_mv Taylor & Francis Ltd
publisher.none.fl_str_mv Taylor & Francis Ltd
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 13.22299

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