Qualitatively and quantitatively different solvatochromism of the MLCT and MMCT absorption bands of centrosymmetric acceptor-bridged diiron (II, II) and diiron(III, II) cyanide com...

Autores
Glöckle, Markus; Katz, Néstor Eduardo; Ketterle, Michael; Kaim, Wolfgang
Año de publicación
2002
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The energies of the metal-to-ligand charge transfer (MLCT) and metal-to-metal charge transfer (MMCT) absorption bands of a number of heterocycle-bridged diiron(II, II) homovalent and diiron(III, II) mixed-valent complexes correlate linearly with Gutmann's acceptor number (AN). The compounds are (NEt4)6[(NC)5Fe(μ-tz)Fe(CN)5] and (NEt4)5[(NC)5Fe(μ-tz)Fe(CN)5], tz=1,2,4,5-tetrazine; (NEt4)4[(NC)4Fe(μ-bptz)Fe(CN) 4] and (NEt4)3[(NC)4Fe(μ-bptz)Fe(CN) 4], bptz=3,6-bis(2-pyridyl)-1,2,4,5-tetrazine; (NEt4)4[(NC)4Fe(μ-bmtz)Fe(CN) 4], bmtz=3,6-bis(2-pyrimidyl)-1,2,4,5-tetrazine; (NEt4)4[(NC)4Fe(μ-bpym)Fe(CN) 4], bpym=2,2′-bipyrimidine. Mononuclear analogues of the tz and bpym ligands were also studied. Various degrees of negative and positive solvatochromism are observed for centrosymmetric dinuclear systems. Unusual observations include the large negative solvatochromism of MLCT bands in Fe(II)Fe(II) species lacking a permanent dipole moment, the positive solvatochromism of MLCT/LMCT bands and the small negative solvatochromism of MMCT bands in the valence-averaged Fe2.5Fe2.5 systems.
Fil: Glöckle, Markus. University Of Stuttgart; Alemania
Fil: Katz, Néstor Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
Fil: Ketterle, Michael. University Of Stuttgart; Alemania
Fil: Kaim, Wolfgang. University Of Stuttgart; Alemania
Materia
Charge Transfer
Cyano Complexes
Iron Compounds
Mixed Valence
Solvatochromism
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:11336/62132
Acceder
id CONICETDig_f56c4c98769cecba04c0b213a22cf9c6
oai_identifier_str oai:ri.conicet.gov.ar:11336/62132
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Qualitatively and quantitatively different solvatochromism of the MLCT and MMCT absorption bands of centrosymmetric acceptor-bridged diiron (II, II) and diiron(III, II) cyanide complexesGlöckle, MarkusKatz, Néstor EduardoKetterle, MichaelKaim, WolfgangCharge TransferCyano ComplexesIron CompoundsMixed ValenceSolvatochromismhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The energies of the metal-to-ligand charge transfer (MLCT) and metal-to-metal charge transfer (MMCT) absorption bands of a number of heterocycle-bridged diiron(II, II) homovalent and diiron(III, II) mixed-valent complexes correlate linearly with Gutmann's acceptor number (AN). The compounds are (NEt4)6[(NC)5Fe(μ-tz)Fe(CN)5] and (NEt4)5[(NC)5Fe(μ-tz)Fe(CN)5], tz=1,2,4,5-tetrazine; (NEt4)4[(NC)4Fe(μ-bptz)Fe(CN) 4] and (NEt4)3[(NC)4Fe(μ-bptz)Fe(CN) 4], bptz=3,6-bis(2-pyridyl)-1,2,4,5-tetrazine; (NEt4)4[(NC)4Fe(μ-bmtz)Fe(CN) 4], bmtz=3,6-bis(2-pyrimidyl)-1,2,4,5-tetrazine; (NEt4)4[(NC)4Fe(μ-bpym)Fe(CN) 4], bpym=2,2′-bipyrimidine. Mononuclear analogues of the tz and bpym ligands were also studied. Various degrees of negative and positive solvatochromism are observed for centrosymmetric dinuclear systems. Unusual observations include the large negative solvatochromism of MLCT bands in Fe(II)Fe(II) species lacking a permanent dipole moment, the positive solvatochromism of MLCT/LMCT bands and the small negative solvatochromism of MMCT bands in the valence-averaged Fe2.5Fe2.5 systems.Fil: Glöckle, Markus. University Of Stuttgart; AlemaniaFil: Katz, Néstor Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; ArgentinaFil: Ketterle, Michael. University Of Stuttgart; AlemaniaFil: Kaim, Wolfgang. University Of Stuttgart; AlemaniaElsevier Science Sa2002-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/62132Glöckle, Markus; Katz, Néstor Eduardo; Ketterle, Michael; Kaim, Wolfgang; Qualitatively and quantitatively different solvatochromism of the MLCT and MMCT absorption bands of centrosymmetric acceptor-bridged diiron (II, II) and diiron(III, II) cyanide complexes; Elsevier Science Sa; Inorganica Chimica Acta; 336; 7-2002; 55-600020-1693CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0020169302008460info:eu-repo/semantics/altIdentifier/doi/10.1016/S0020-1693(02)00846-0info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:57:37Zoai:ri.conicet.gov.ar:11336/62132instacron: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 09:57:37.289CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Qualitatively and quantitatively different solvatochromism of the MLCT and MMCT absorption bands of centrosymmetric acceptor-bridged diiron (II, II) and diiron(III, II) cyanide complexes
title Qualitatively and quantitatively different solvatochromism of the MLCT and MMCT absorption bands of centrosymmetric acceptor-bridged diiron (II, II) and diiron(III, II) cyanide complexes
spellingShingle Qualitatively and quantitatively different solvatochromism of the MLCT and MMCT absorption bands of centrosymmetric acceptor-bridged diiron (II, II) and diiron(III, II) cyanide complexes
Glöckle, Markus
Charge Transfer
Cyano Complexes
Iron Compounds
Mixed Valence
Solvatochromism
title_short Qualitatively and quantitatively different solvatochromism of the MLCT and MMCT absorption bands of centrosymmetric acceptor-bridged diiron (II, II) and diiron(III, II) cyanide complexes
title_full Qualitatively and quantitatively different solvatochromism of the MLCT and MMCT absorption bands of centrosymmetric acceptor-bridged diiron (II, II) and diiron(III, II) cyanide complexes
title_fullStr Qualitatively and quantitatively different solvatochromism of the MLCT and MMCT absorption bands of centrosymmetric acceptor-bridged diiron (II, II) and diiron(III, II) cyanide complexes
title_full_unstemmed Qualitatively and quantitatively different solvatochromism of the MLCT and MMCT absorption bands of centrosymmetric acceptor-bridged diiron (II, II) and diiron(III, II) cyanide complexes
title_sort Qualitatively and quantitatively different solvatochromism of the MLCT and MMCT absorption bands of centrosymmetric acceptor-bridged diiron (II, II) and diiron(III, II) cyanide complexes
dc.creator.none.fl_str_mv Glöckle, Markus
Katz, Néstor Eduardo
Ketterle, Michael
Kaim, Wolfgang
author Glöckle, Markus
author_facet Glöckle, Markus
Katz, Néstor Eduardo
Ketterle, Michael
Kaim, Wolfgang
author_role author
author2 Katz, Néstor Eduardo
Ketterle, Michael
Kaim, Wolfgang
author2_role author
author
author
dc.subject.none.fl_str_mv Charge Transfer
Cyano Complexes
Iron Compounds
Mixed Valence
Solvatochromism
topic Charge Transfer
Cyano Complexes
Iron Compounds
Mixed Valence
Solvatochromism
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The energies of the metal-to-ligand charge transfer (MLCT) and metal-to-metal charge transfer (MMCT) absorption bands of a number of heterocycle-bridged diiron(II, II) homovalent and diiron(III, II) mixed-valent complexes correlate linearly with Gutmann's acceptor number (AN). The compounds are (NEt4)6[(NC)5Fe(μ-tz)Fe(CN)5] and (NEt4)5[(NC)5Fe(μ-tz)Fe(CN)5], tz=1,2,4,5-tetrazine; (NEt4)4[(NC)4Fe(μ-bptz)Fe(CN) 4] and (NEt4)3[(NC)4Fe(μ-bptz)Fe(CN) 4], bptz=3,6-bis(2-pyridyl)-1,2,4,5-tetrazine; (NEt4)4[(NC)4Fe(μ-bmtz)Fe(CN) 4], bmtz=3,6-bis(2-pyrimidyl)-1,2,4,5-tetrazine; (NEt4)4[(NC)4Fe(μ-bpym)Fe(CN) 4], bpym=2,2′-bipyrimidine. Mononuclear analogues of the tz and bpym ligands were also studied. Various degrees of negative and positive solvatochromism are observed for centrosymmetric dinuclear systems. Unusual observations include the large negative solvatochromism of MLCT bands in Fe(II)Fe(II) species lacking a permanent dipole moment, the positive solvatochromism of MLCT/LMCT bands and the small negative solvatochromism of MMCT bands in the valence-averaged Fe2.5Fe2.5 systems.
Fil: Glöckle, Markus. University Of Stuttgart; Alemania
Fil: Katz, Néstor Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
Fil: Ketterle, Michael. University Of Stuttgart; Alemania
Fil: Kaim, Wolfgang. University Of Stuttgart; Alemania
description The energies of the metal-to-ligand charge transfer (MLCT) and metal-to-metal charge transfer (MMCT) absorption bands of a number of heterocycle-bridged diiron(II, II) homovalent and diiron(III, II) mixed-valent complexes correlate linearly with Gutmann's acceptor number (AN). The compounds are (NEt4)6[(NC)5Fe(μ-tz)Fe(CN)5] and (NEt4)5[(NC)5Fe(μ-tz)Fe(CN)5], tz=1,2,4,5-tetrazine; (NEt4)4[(NC)4Fe(μ-bptz)Fe(CN) 4] and (NEt4)3[(NC)4Fe(μ-bptz)Fe(CN) 4], bptz=3,6-bis(2-pyridyl)-1,2,4,5-tetrazine; (NEt4)4[(NC)4Fe(μ-bmtz)Fe(CN) 4], bmtz=3,6-bis(2-pyrimidyl)-1,2,4,5-tetrazine; (NEt4)4[(NC)4Fe(μ-bpym)Fe(CN) 4], bpym=2,2′-bipyrimidine. Mononuclear analogues of the tz and bpym ligands were also studied. Various degrees of negative and positive solvatochromism are observed for centrosymmetric dinuclear systems. Unusual observations include the large negative solvatochromism of MLCT bands in Fe(II)Fe(II) species lacking a permanent dipole moment, the positive solvatochromism of MLCT/LMCT bands and the small negative solvatochromism of MMCT bands in the valence-averaged Fe2.5Fe2.5 systems.
publishDate 2002
dc.date.none.fl_str_mv 2002-07
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/11336/62132
Glöckle, Markus; Katz, Néstor Eduardo; Ketterle, Michael; Kaim, Wolfgang; Qualitatively and quantitatively different solvatochromism of the MLCT and MMCT absorption bands of centrosymmetric acceptor-bridged diiron (II, II) and diiron(III, II) cyanide complexes; Elsevier Science Sa; Inorganica Chimica Acta; 336; 7-2002; 55-60
0020-1693
CONICET Digital
CONICET
url http://hdl.handle.net/11336/62132
identifier_str_mv Glöckle, Markus; Katz, Néstor Eduardo; Ketterle, Michael; Kaim, Wolfgang; Qualitatively and quantitatively different solvatochromism of the MLCT and MMCT absorption bands of centrosymmetric acceptor-bridged diiron (II, II) and diiron(III, II) cyanide complexes; Elsevier Science Sa; Inorganica Chimica Acta; 336; 7-2002; 55-60
0020-1693
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0020169302008460
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0020-1693(02)00846-0
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
dc.publisher.none.fl_str_mv Elsevier Science Sa
publisher.none.fl_str_mv Elsevier Science Sa
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_ 1844613722350288896
score 13.070432

Publicaciones similares