Photodissociation of pyrrole-ammonia clusters by velocity map imaging: Mechanism for the H-atom transfer reaction

Autores
Rubio-Lago, L.; Amaral, G. A.; Oldani, Andres Nicolas; Rodriguez, J. D.; Gonzalez, M. G.; Pino, Gustavo Ariel; Bañares, L.
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The photodissociation dynamics of pyrrole-ammonia clusters (PyH·(NH3)n, n = 2-6) has been studied using a combination of velocity map imaging and non-resonant detection of the NH 4(NH3)n-1 products. The excited state hydrogen-atom transfer mechanism (ESHT) is evidenced through delayed ionization and presents a threshold around 236.6 nm, in agreement with previous reports. A high resolution determination of the kinetic energy distributions (KEDs) of the products reveals slow (∼0.15 eV) and structured distributions for all the ammonia cluster masses studied. The low values of the measured kinetic energy rule out the existence of a long-lived intermediate state, as it has been proposed previously. Instead, a direct N-H bond rupture, in the fashion of the photodissociation of bare pyrrole, is proposed. This assumption is supported by a careful analysis of the structure of the measured KEDs in terms of a discrete vibrational activity of the pyrrolyl co-fragment. © the Owner Societies 2011.
Fil: Rubio-Lago, L.. Universidad Complutense de Madrid; España
Fil: Amaral, G. A.. Universidad Complutense de Madrid; España
Fil: Oldani, Andres Nicolas. Universidad Nacional de Quilmes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Rodriguez, J. D.. Universidad Complutense de Madrid; España
Fil: Gonzalez, M. G.. Universidad Complutense de Madrid; España
Fil: Pino, Gustavo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina. Universidad Complutense de Madrid; España
Fil: Bañares, L.. Universidad Complutense de Madrid; España
Materia
Esht
Conical Intersection
Pyrrol
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:11336/67368
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/67368
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Photodissociation of pyrrole-ammonia clusters by velocity map imaging: Mechanism for the H-atom transfer reactionRubio-Lago, L.Amaral, G. A.Oldani, Andres NicolasRodriguez, J. D.Gonzalez, M. G.Pino, Gustavo ArielBañares, L.EshtConical IntersectionPyrrolhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The photodissociation dynamics of pyrrole-ammonia clusters (PyH·(NH3)n, n = 2-6) has been studied using a combination of velocity map imaging and non-resonant detection of the NH 4(NH3)n-1 products. The excited state hydrogen-atom transfer mechanism (ESHT) is evidenced through delayed ionization and presents a threshold around 236.6 nm, in agreement with previous reports. A high resolution determination of the kinetic energy distributions (KEDs) of the products reveals slow (∼0.15 eV) and structured distributions for all the ammonia cluster masses studied. The low values of the measured kinetic energy rule out the existence of a long-lived intermediate state, as it has been proposed previously. Instead, a direct N-H bond rupture, in the fashion of the photodissociation of bare pyrrole, is proposed. This assumption is supported by a careful analysis of the structure of the measured KEDs in terms of a discrete vibrational activity of the pyrrolyl co-fragment. © the Owner Societies 2011.Fil: Rubio-Lago, L.. Universidad Complutense de Madrid; EspañaFil: Amaral, G. A.. Universidad Complutense de Madrid; EspañaFil: Oldani, Andres Nicolas. Universidad Nacional de Quilmes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Rodriguez, J. D.. Universidad Complutense de Madrid; EspañaFil: Gonzalez, M. G.. Universidad Complutense de Madrid; EspañaFil: Pino, Gustavo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina. Universidad Complutense de Madrid; EspañaFil: Bañares, L.. Universidad Complutense de Madrid; EspañaRoyal Society of Chemistry2011-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/67368Rubio-Lago, L.; Amaral, G. A.; Oldani, Andres Nicolas; Rodriguez, J. D.; Gonzalez, M. G.; et al.; Photodissociation of pyrrole-ammonia clusters by velocity map imaging: Mechanism for the H-atom transfer reaction; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 13; 3; 1-2011; 1082-10911463-90761463-9084CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pubmed/21076731info:eu-repo/semantics/altIdentifier/doi/10.1039/c0cp01442ginfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:44:20Zoai:ri.conicet.gov.ar:11336/67368instacron: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 09:44:20.564CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Photodissociation of pyrrole-ammonia clusters by velocity map imaging: Mechanism for the H-atom transfer reaction
title Photodissociation of pyrrole-ammonia clusters by velocity map imaging: Mechanism for the H-atom transfer reaction
spellingShingle Photodissociation of pyrrole-ammonia clusters by velocity map imaging: Mechanism for the H-atom transfer reaction
Rubio-Lago, L.
Esht
Conical Intersection
Pyrrol
title_short Photodissociation of pyrrole-ammonia clusters by velocity map imaging: Mechanism for the H-atom transfer reaction
title_full Photodissociation of pyrrole-ammonia clusters by velocity map imaging: Mechanism for the H-atom transfer reaction
title_fullStr Photodissociation of pyrrole-ammonia clusters by velocity map imaging: Mechanism for the H-atom transfer reaction
title_full_unstemmed Photodissociation of pyrrole-ammonia clusters by velocity map imaging: Mechanism for the H-atom transfer reaction
title_sort Photodissociation of pyrrole-ammonia clusters by velocity map imaging: Mechanism for the H-atom transfer reaction
dc.creator.none.fl_str_mv Rubio-Lago, L.
Amaral, G. A.
Oldani, Andres Nicolas
Rodriguez, J. D.
Gonzalez, M. G.
Pino, Gustavo Ariel
Bañares, L.
author Rubio-Lago, L.
author_facet Rubio-Lago, L.
Amaral, G. A.
Oldani, Andres Nicolas
Rodriguez, J. D.
Gonzalez, M. G.
Pino, Gustavo Ariel
Bañares, L.
author_role author
author2 Amaral, G. A.
Oldani, Andres Nicolas
Rodriguez, J. D.
Gonzalez, M. G.
Pino, Gustavo Ariel
Bañares, L.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Esht
Conical Intersection
Pyrrol
topic Esht
Conical Intersection
Pyrrol
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 photodissociation dynamics of pyrrole-ammonia clusters (PyH·(NH3)n, n = 2-6) has been studied using a combination of velocity map imaging and non-resonant detection of the NH 4(NH3)n-1 products. The excited state hydrogen-atom transfer mechanism (ESHT) is evidenced through delayed ionization and presents a threshold around 236.6 nm, in agreement with previous reports. A high resolution determination of the kinetic energy distributions (KEDs) of the products reveals slow (∼0.15 eV) and structured distributions for all the ammonia cluster masses studied. The low values of the measured kinetic energy rule out the existence of a long-lived intermediate state, as it has been proposed previously. Instead, a direct N-H bond rupture, in the fashion of the photodissociation of bare pyrrole, is proposed. This assumption is supported by a careful analysis of the structure of the measured KEDs in terms of a discrete vibrational activity of the pyrrolyl co-fragment. © the Owner Societies 2011.
Fil: Rubio-Lago, L.. Universidad Complutense de Madrid; España
Fil: Amaral, G. A.. Universidad Complutense de Madrid; España
Fil: Oldani, Andres Nicolas. Universidad Nacional de Quilmes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Rodriguez, J. D.. Universidad Complutense de Madrid; España
Fil: Gonzalez, M. G.. Universidad Complutense de Madrid; España
Fil: Pino, Gustavo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina. Universidad Complutense de Madrid; España
Fil: Bañares, L.. Universidad Complutense de Madrid; España
description The photodissociation dynamics of pyrrole-ammonia clusters (PyH·(NH3)n, n = 2-6) has been studied using a combination of velocity map imaging and non-resonant detection of the NH 4(NH3)n-1 products. The excited state hydrogen-atom transfer mechanism (ESHT) is evidenced through delayed ionization and presents a threshold around 236.6 nm, in agreement with previous reports. A high resolution determination of the kinetic energy distributions (KEDs) of the products reveals slow (∼0.15 eV) and structured distributions for all the ammonia cluster masses studied. The low values of the measured kinetic energy rule out the existence of a long-lived intermediate state, as it has been proposed previously. Instead, a direct N-H bond rupture, in the fashion of the photodissociation of bare pyrrole, is proposed. This assumption is supported by a careful analysis of the structure of the measured KEDs in terms of a discrete vibrational activity of the pyrrolyl co-fragment. © the Owner Societies 2011.
publishDate 2011
dc.date.none.fl_str_mv 2011-01
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/11336/67368
Rubio-Lago, L.; Amaral, G. A.; Oldani, Andres Nicolas; Rodriguez, J. D.; Gonzalez, M. G.; et al.; Photodissociation of pyrrole-ammonia clusters by velocity map imaging: Mechanism for the H-atom transfer reaction; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 13; 3; 1-2011; 1082-1091
1463-9076
1463-9084
CONICET Digital
CONICET
url http://hdl.handle.net/11336/67368
identifier_str_mv Rubio-Lago, L.; Amaral, G. A.; Oldani, Andres Nicolas; Rodriguez, J. D.; Gonzalez, M. G.; et al.; Photodissociation of pyrrole-ammonia clusters by velocity map imaging: Mechanism for the H-atom transfer reaction; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 13; 3; 1-2011; 1082-1091
1463-9076
1463-9084
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.ncbi.nlm.nih.gov/pubmed/21076731
info:eu-repo/semantics/altIdentifier/doi/10.1039/c0cp01442g
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 Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
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 13.070432

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