Conformational Space of the Pseudosaccharin Allyl Ether 3-(Allyloxy)-1,2-benzisothiazole 1,1-Dioxide in Gas Phase and in Rare Gas Matrices

Autores
Gomez Zavaglia, Andrea; Kaczor, Agnieszka; Almeida, Rui; Cristiano, Maria de Lurdes S.; Fausto, Rui
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work, the conformational space of the pseudosaccharyl ether 3-(allyloxy)-1,2-benzisothiazole 1,1-dioxide (ABID) has been studied by means of infrared spectroscopy and density functional theory (DFT) calculations. Five different low energy conformers (TSk, TC, GSk, GSk' and GC, with relative energies of 0.00, 1.97, 2.00, 3.82 and 6.02 kJ mol(-1), respectively) were found on the DFT(B3LYP)/6-311++G(3df,3pd) potential energy surface of the molecule, all of them differing in the conformation of the allyl substituent. According to the calculations, in the gaseous phase all conformers are significantly populated (TSk:TC:GSk:GSk':GC = 47%:16%:18%:12%:7%, at 350 K). In the cryogenic matrices, however, only the TSk and TC conformers exist due to isomerization from the higher energy gauche forms to the most stable trans isomers during deposition of the matrix (conformational cooling). The observed conformational cooling is in consonance with the low calculated energy barriers for the GSk --> TSk, GSk' --> TSk and GC --> TC isomerization processes. Results from annealing experiments in krypton matrix doubtlessly show that in this matrix the order of stability of the TSk and TC conformers is reversed, with the more planar TC form becoming the most stable conformer.
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
Fil: Kaczor, Agnieszka. Universidad de Coimbra; Portugal
Fil: Almeida, Rui. Universidad de Algarve; Portugal. Universidad de Coimbra; Portugal
Fil: Cristiano, Maria de Lurdes S.. Universidad de Algarve; Portugal
Fil: Fausto, Rui. Universidad de Coimbra; Portugal
Materia
Saccharin
Gas Matrices
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:11336/159004
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Conformational Space of the Pseudosaccharin Allyl Ether 3-(Allyloxy)-1,2-benzisothiazole 1,1-Dioxide in Gas Phase and in Rare Gas MatricesGomez Zavaglia, AndreaKaczor, AgnieszkaAlmeida, RuiCristiano, Maria de Lurdes S.Fausto, RuiSaccharinGas Matriceshttps://purl.org/becyt/ford/2.11https://purl.org/becyt/ford/2In this work, the conformational space of the pseudosaccharyl ether 3-(allyloxy)-1,2-benzisothiazole 1,1-dioxide (ABID) has been studied by means of infrared spectroscopy and density functional theory (DFT) calculations. Five different low energy conformers (TSk, TC, GSk, GSk' and GC, with relative energies of 0.00, 1.97, 2.00, 3.82 and 6.02 kJ mol(-1), respectively) were found on the DFT(B3LYP)/6-311++G(3df,3pd) potential energy surface of the molecule, all of them differing in the conformation of the allyl substituent. According to the calculations, in the gaseous phase all conformers are significantly populated (TSk:TC:GSk:GSk':GC = 47%:16%:18%:12%:7%, at 350 K). In the cryogenic matrices, however, only the TSk and TC conformers exist due to isomerization from the higher energy gauche forms to the most stable trans isomers during deposition of the matrix (conformational cooling). The observed conformational cooling is in consonance with the low calculated energy barriers for the GSk --> TSk, GSk' --> TSk and GC --> TC isomerization processes. Results from annealing experiments in krypton matrix doubtlessly show that in this matrix the order of stability of the TSk and TC conformers is reversed, with the more planar TC form becoming the most stable conformer.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; ArgentinaFil: Kaczor, Agnieszka. Universidad de Coimbra; PortugalFil: Almeida, Rui. Universidad de Algarve; Portugal. Universidad de Coimbra; PortugalFil: Cristiano, Maria de Lurdes S.. Universidad de Algarve; PortugalFil: Fausto, Rui. Universidad de Coimbra; PortugalAmerican Chemical Society2008-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/159004Gomez Zavaglia, Andrea; Kaczor, Agnieszka; Almeida, Rui; Cristiano, Maria de Lurdes S.; Fausto, Rui; Conformational Space of the Pseudosaccharin Allyl Ether 3-(Allyloxy)-1,2-benzisothiazole 1,1-Dioxide in Gas Phase and in Rare Gas Matrices; American Chemical Society; Journal of Physical Chemistry A; 112; 8; 2-2008; 1762-17721089-56391520-5215CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/jp0770918info:eu-repo/semantics/altIdentifier/doi/10.1021/jp0770918info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:05:00Zoai:ri.conicet.gov.ar:11336/159004instacron: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 10:05:00.875CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Conformational Space of the Pseudosaccharin Allyl Ether 3-(Allyloxy)-1,2-benzisothiazole 1,1-Dioxide in Gas Phase and in Rare Gas Matrices
title Conformational Space of the Pseudosaccharin Allyl Ether 3-(Allyloxy)-1,2-benzisothiazole 1,1-Dioxide in Gas Phase and in Rare Gas Matrices
spellingShingle Conformational Space of the Pseudosaccharin Allyl Ether 3-(Allyloxy)-1,2-benzisothiazole 1,1-Dioxide in Gas Phase and in Rare Gas Matrices
Gomez Zavaglia, Andrea
Saccharin
Gas Matrices
title_short Conformational Space of the Pseudosaccharin Allyl Ether 3-(Allyloxy)-1,2-benzisothiazole 1,1-Dioxide in Gas Phase and in Rare Gas Matrices
title_full Conformational Space of the Pseudosaccharin Allyl Ether 3-(Allyloxy)-1,2-benzisothiazole 1,1-Dioxide in Gas Phase and in Rare Gas Matrices
title_fullStr Conformational Space of the Pseudosaccharin Allyl Ether 3-(Allyloxy)-1,2-benzisothiazole 1,1-Dioxide in Gas Phase and in Rare Gas Matrices
title_full_unstemmed Conformational Space of the Pseudosaccharin Allyl Ether 3-(Allyloxy)-1,2-benzisothiazole 1,1-Dioxide in Gas Phase and in Rare Gas Matrices
title_sort Conformational Space of the Pseudosaccharin Allyl Ether 3-(Allyloxy)-1,2-benzisothiazole 1,1-Dioxide in Gas Phase and in Rare Gas Matrices
dc.creator.none.fl_str_mv Gomez Zavaglia, Andrea
Kaczor, Agnieszka
Almeida, Rui
Cristiano, Maria de Lurdes S.
Fausto, Rui
author Gomez Zavaglia, Andrea
author_facet Gomez Zavaglia, Andrea
Kaczor, Agnieszka
Almeida, Rui
Cristiano, Maria de Lurdes S.
Fausto, Rui
author_role author
author2 Kaczor, Agnieszka
Almeida, Rui
Cristiano, Maria de Lurdes S.
Fausto, Rui
author2_role author
author
author
author
dc.subject.none.fl_str_mv Saccharin
Gas Matrices
topic Saccharin
Gas Matrices
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.11
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv In this work, the conformational space of the pseudosaccharyl ether 3-(allyloxy)-1,2-benzisothiazole 1,1-dioxide (ABID) has been studied by means of infrared spectroscopy and density functional theory (DFT) calculations. Five different low energy conformers (TSk, TC, GSk, GSk' and GC, with relative energies of 0.00, 1.97, 2.00, 3.82 and 6.02 kJ mol(-1), respectively) were found on the DFT(B3LYP)/6-311++G(3df,3pd) potential energy surface of the molecule, all of them differing in the conformation of the allyl substituent. According to the calculations, in the gaseous phase all conformers are significantly populated (TSk:TC:GSk:GSk':GC = 47%:16%:18%:12%:7%, at 350 K). In the cryogenic matrices, however, only the TSk and TC conformers exist due to isomerization from the higher energy gauche forms to the most stable trans isomers during deposition of the matrix (conformational cooling). The observed conformational cooling is in consonance with the low calculated energy barriers for the GSk --> TSk, GSk' --> TSk and GC --> TC isomerization processes. Results from annealing experiments in krypton matrix doubtlessly show that in this matrix the order of stability of the TSk and TC conformers is reversed, with the more planar TC form becoming the most stable conformer.
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
Fil: Kaczor, Agnieszka. Universidad de Coimbra; Portugal
Fil: Almeida, Rui. Universidad de Algarve; Portugal. Universidad de Coimbra; Portugal
Fil: Cristiano, Maria de Lurdes S.. Universidad de Algarve; Portugal
Fil: Fausto, Rui. Universidad de Coimbra; Portugal
description In this work, the conformational space of the pseudosaccharyl ether 3-(allyloxy)-1,2-benzisothiazole 1,1-dioxide (ABID) has been studied by means of infrared spectroscopy and density functional theory (DFT) calculations. Five different low energy conformers (TSk, TC, GSk, GSk' and GC, with relative energies of 0.00, 1.97, 2.00, 3.82 and 6.02 kJ mol(-1), respectively) were found on the DFT(B3LYP)/6-311++G(3df,3pd) potential energy surface of the molecule, all of them differing in the conformation of the allyl substituent. According to the calculations, in the gaseous phase all conformers are significantly populated (TSk:TC:GSk:GSk':GC = 47%:16%:18%:12%:7%, at 350 K). In the cryogenic matrices, however, only the TSk and TC conformers exist due to isomerization from the higher energy gauche forms to the most stable trans isomers during deposition of the matrix (conformational cooling). The observed conformational cooling is in consonance with the low calculated energy barriers for the GSk --> TSk, GSk' --> TSk and GC --> TC isomerization processes. Results from annealing experiments in krypton matrix doubtlessly show that in this matrix the order of stability of the TSk and TC conformers is reversed, with the more planar TC form becoming the most stable conformer.
publishDate 2008
dc.date.none.fl_str_mv 2008-02
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/11336/159004
Gomez Zavaglia, Andrea; Kaczor, Agnieszka; Almeida, Rui; Cristiano, Maria de Lurdes S.; Fausto, Rui; Conformational Space of the Pseudosaccharin Allyl Ether 3-(Allyloxy)-1,2-benzisothiazole 1,1-Dioxide in Gas Phase and in Rare Gas Matrices; American Chemical Society; Journal of Physical Chemistry A; 112; 8; 2-2008; 1762-1772
1089-5639
1520-5215
CONICET Digital
CONICET
url http://hdl.handle.net/11336/159004
identifier_str_mv Gomez Zavaglia, Andrea; Kaczor, Agnieszka; Almeida, Rui; Cristiano, Maria de Lurdes S.; Fausto, Rui; Conformational Space of the Pseudosaccharin Allyl Ether 3-(Allyloxy)-1,2-benzisothiazole 1,1-Dioxide in Gas Phase and in Rare Gas Matrices; American Chemical Society; Journal of Physical Chemistry A; 112; 8; 2-2008; 1762-1772
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/url/https://pubs.acs.org/doi/10.1021/jp0770918
info:eu-repo/semantics/altIdentifier/doi/10.1021/jp0770918
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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score 13.070432

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