Tautomer selective photochemistry in 1-(tetrazol-5-yl)ethanol
- Autores
- Ismael, Amín; Cristiano, M.L.S.; Fausto, Rui; Gomez Zavaglia, Andrea
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- A combined matrix isolation FTIR and theoretical DFT/B3LYP/6-311++G(d,p) study of the molecular structure and photochemistry of 1-(tetrazol-5-yl)ethanol [1-TE] was performed. The potential energy surface landscapes of the 1H and 2H tautomers of the compound were investigated and the theoretical results were used to help characterize the conformational mixture existing in equilibrium in the gas phase prior to deposition of the matrices, as well as the conformers trapped in the latter. In the gas phase, at room temperature, the compound exists as a mixture of 12 conformers (five of the 1H tautomer and seven of the 2H tautomer). Upon deposition of the compound in an argon matrix at 10 K, only three main forms survive, because the low barriers for conformational isomerization allow extensive conformational cooling during deposition. Deposition of the matrix at 30 K led to further simplification of the conformational mixture with only one conformer of each tautomer of 1-TE surviving. These conformers correspond to the most stable forms of each tautomer, which bear different types of intramolecular H-bonds: 1H-I has an NH· · ·O hydrogen bond, whereas 2H-I has an OH· · ·N hydrogen bond. Upon irradiating with UV light (λ > 200 nm), a matrix containing both 1H-I and 2H-I forms, an unprecedented tautomer selective photochemistry was observed, with the 2H tautomeric form undergoing unimolecular decomposition to azide + hydroxypropanenitrile and the 1H-tautomer being photostable.
Fil: Ismael, Amín. Universidad de Algarve; Portugal
Fil: Cristiano, M.L.S.. Universidad de Algarve; Portugal
Fil: Fausto, Rui. Universidad de Coimbra; Portugal
Fil: Gomez Zavaglia, Andrea. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos; Argentina. Universidad de Coimbra; Portugal - Materia
-
Tetrazole
Photochemistry - 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:11336/131307
Ver los metadatos del registro completo
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Tautomer selective photochemistry in 1-(tetrazol-5-yl)ethanolIsmael, AmínCristiano, M.L.S.Fausto, RuiGomez Zavaglia, AndreaTetrazolePhotochemistryhttps://purl.org/becyt/ford/2.11https://purl.org/becyt/ford/2A combined matrix isolation FTIR and theoretical DFT/B3LYP/6-311++G(d,p) study of the molecular structure and photochemistry of 1-(tetrazol-5-yl)ethanol [1-TE] was performed. The potential energy surface landscapes of the 1H and 2H tautomers of the compound were investigated and the theoretical results were used to help characterize the conformational mixture existing in equilibrium in the gas phase prior to deposition of the matrices, as well as the conformers trapped in the latter. In the gas phase, at room temperature, the compound exists as a mixture of 12 conformers (five of the 1H tautomer and seven of the 2H tautomer). Upon deposition of the compound in an argon matrix at 10 K, only three main forms survive, because the low barriers for conformational isomerization allow extensive conformational cooling during deposition. Deposition of the matrix at 30 K led to further simplification of the conformational mixture with only one conformer of each tautomer of 1-TE surviving. These conformers correspond to the most stable forms of each tautomer, which bear different types of intramolecular H-bonds: 1H-I has an NH· · ·O hydrogen bond, whereas 2H-I has an OH· · ·N hydrogen bond. Upon irradiating with UV light (λ > 200 nm), a matrix containing both 1H-I and 2H-I forms, an unprecedented tautomer selective photochemistry was observed, with the 2H tautomeric form undergoing unimolecular decomposition to azide + hydroxypropanenitrile and the 1H-tautomer being photostable.Fil: Ismael, Amín. Universidad de Algarve; PortugalFil: Cristiano, M.L.S.. Universidad de Algarve; PortugalFil: Fausto, Rui. Universidad de Coimbra; PortugalFil: Gomez Zavaglia, Andrea. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos; Argentina. Universidad de Coimbra; PortugalAmerican Chemical Society2010-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/131307Ismael, Amín; Cristiano, M.L.S.; Fausto, Rui; Gomez Zavaglia, Andrea; Tautomer selective photochemistry in 1-(tetrazol-5-yl)ethanol; American Chemical Society; Journal of Physical Chemistry A; 114; 50; 11-2010; 13076-130851089-56391520-5215CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/jp109215qinfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/jp109215qinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:11:12Zoai:ri.conicet.gov.ar:11336/131307instacron: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:34982025-09-03 10:11:12.817CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Tautomer selective photochemistry in 1-(tetrazol-5-yl)ethanol |
title |
Tautomer selective photochemistry in 1-(tetrazol-5-yl)ethanol |
spellingShingle |
Tautomer selective photochemistry in 1-(tetrazol-5-yl)ethanol Ismael, Amín Tetrazole Photochemistry |
title_short |
Tautomer selective photochemistry in 1-(tetrazol-5-yl)ethanol |
title_full |
Tautomer selective photochemistry in 1-(tetrazol-5-yl)ethanol |
title_fullStr |
Tautomer selective photochemistry in 1-(tetrazol-5-yl)ethanol |
title_full_unstemmed |
Tautomer selective photochemistry in 1-(tetrazol-5-yl)ethanol |
title_sort |
Tautomer selective photochemistry in 1-(tetrazol-5-yl)ethanol |
dc.creator.none.fl_str_mv |
Ismael, Amín Cristiano, M.L.S. Fausto, Rui Gomez Zavaglia, Andrea |
author |
Ismael, Amín |
author_facet |
Ismael, Amín Cristiano, M.L.S. Fausto, Rui Gomez Zavaglia, Andrea |
author_role |
author |
author2 |
Cristiano, M.L.S. Fausto, Rui Gomez Zavaglia, Andrea |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Tetrazole Photochemistry |
topic |
Tetrazole Photochemistry |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/2.11 https://purl.org/becyt/ford/2 |
dc.description.none.fl_txt_mv |
A combined matrix isolation FTIR and theoretical DFT/B3LYP/6-311++G(d,p) study of the molecular structure and photochemistry of 1-(tetrazol-5-yl)ethanol [1-TE] was performed. The potential energy surface landscapes of the 1H and 2H tautomers of the compound were investigated and the theoretical results were used to help characterize the conformational mixture existing in equilibrium in the gas phase prior to deposition of the matrices, as well as the conformers trapped in the latter. In the gas phase, at room temperature, the compound exists as a mixture of 12 conformers (five of the 1H tautomer and seven of the 2H tautomer). Upon deposition of the compound in an argon matrix at 10 K, only three main forms survive, because the low barriers for conformational isomerization allow extensive conformational cooling during deposition. Deposition of the matrix at 30 K led to further simplification of the conformational mixture with only one conformer of each tautomer of 1-TE surviving. These conformers correspond to the most stable forms of each tautomer, which bear different types of intramolecular H-bonds: 1H-I has an NH· · ·O hydrogen bond, whereas 2H-I has an OH· · ·N hydrogen bond. Upon irradiating with UV light (λ > 200 nm), a matrix containing both 1H-I and 2H-I forms, an unprecedented tautomer selective photochemistry was observed, with the 2H tautomeric form undergoing unimolecular decomposition to azide + hydroxypropanenitrile and the 1H-tautomer being photostable. Fil: Ismael, Amín. Universidad de Algarve; Portugal Fil: Cristiano, M.L.S.. Universidad de Algarve; Portugal Fil: Fausto, Rui. Universidad de Coimbra; Portugal Fil: Gomez Zavaglia, Andrea. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos; Argentina. Universidad de Coimbra; Portugal |
description |
A combined matrix isolation FTIR and theoretical DFT/B3LYP/6-311++G(d,p) study of the molecular structure and photochemistry of 1-(tetrazol-5-yl)ethanol [1-TE] was performed. The potential energy surface landscapes of the 1H and 2H tautomers of the compound were investigated and the theoretical results were used to help characterize the conformational mixture existing in equilibrium in the gas phase prior to deposition of the matrices, as well as the conformers trapped in the latter. In the gas phase, at room temperature, the compound exists as a mixture of 12 conformers (five of the 1H tautomer and seven of the 2H tautomer). Upon deposition of the compound in an argon matrix at 10 K, only three main forms survive, because the low barriers for conformational isomerization allow extensive conformational cooling during deposition. Deposition of the matrix at 30 K led to further simplification of the conformational mixture with only one conformer of each tautomer of 1-TE surviving. These conformers correspond to the most stable forms of each tautomer, which bear different types of intramolecular H-bonds: 1H-I has an NH· · ·O hydrogen bond, whereas 2H-I has an OH· · ·N hydrogen bond. Upon irradiating with UV light (λ > 200 nm), a matrix containing both 1H-I and 2H-I forms, an unprecedented tautomer selective photochemistry was observed, with the 2H tautomeric form undergoing unimolecular decomposition to azide + hydroxypropanenitrile and the 1H-tautomer being photostable. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-11 |
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/11336/131307 Ismael, Amín; Cristiano, M.L.S.; Fausto, Rui; Gomez Zavaglia, Andrea; Tautomer selective photochemistry in 1-(tetrazol-5-yl)ethanol; American Chemical Society; Journal of Physical Chemistry A; 114; 50; 11-2010; 13076-13085 1089-5639 1520-5215 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/131307 |
identifier_str_mv |
Ismael, Amín; Cristiano, M.L.S.; Fausto, Rui; Gomez Zavaglia, Andrea; Tautomer selective photochemistry in 1-(tetrazol-5-yl)ethanol; American Chemical Society; Journal of Physical Chemistry A; 114; 50; 11-2010; 13076-13085 1089-5639 1520-5215 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1021/jp109215q info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/jp109215q |
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 |
American Chemical Society |
publisher.none.fl_str_mv |
American Chemical Society |
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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1842270150370263040 |
score |
13.13397 |