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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/83662
Ver los metadatos del registro completo
id |
CONICETDig_85bcde8467caf8e3d72b3983a59c991e |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/83662 |
network_acronym_str |
CONICETDig |
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 Técnicas2025-09-29T10:16:45Zoai: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:34982025-09-29 10:16:45.747CONICET 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 |
_version_ |
1844614114671853568 |
score |
13.070432 |