Qualitative study of substituent effects on NMR15N and 17O chemical shifts
- Autores
- Contreras, Ruben Horacio; Llorente, Tomás; Pagola, Gabriel Ignacio; Bustamante Pilone, Manuel Guillermo; Pasqualini, Enrique E.; Melo, Juan Ignacio; Tormena, Cláudio F.
- Año de publicación
- 2009
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- A qualitative approach to analyze the electronic origin of substituent effects on the paramagnetic part of chemical shifts is described and applied to few model systems, where its potentiality can be appreciated. The formulation of this approach is based on the following grounds. The influence of different inter- or intramolecular interactions on a second-order property can be qualitatively predicted if it can be known how they affect the main virtual excitations entering into that second-order property. A set of consistent approximations are introduced in order to analyze the behavior of occupied and virtual orbitais that define some experimental trends of magnetic shielding constants. This approach is applied first to study the electronic origin of methyl-β substituent effects on both 15N and 17O chemical shifts, and afterward it is applied to a couple of examples of long-range substituent effects originated in charge transfer interactions such as the conjugative effect in aromatic compounds and σ-hyperconjugative interactions in saturated multicyclic compounds. © 2009 American Chemical Society.
Fil: Contreras, Ruben Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Llorente, Tomás. Universidad de Buenos Aires; Argentina
Fil: Pagola, Gabriel Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Bustamante Pilone, Manuel Guillermo. Universidad de Buenos Aires; Argentina
Fil: Pasqualini, Enrique E.. Comisión Nacional de Energía Atómica; Argentina
Fil: Melo, Juan Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Tormena, Cláudio F.. Universidade Estadual de Campinas; Brasil - Materia
-
1,3-Dithiane
Hyperconjugative Interactions
Fermi Contact - 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:11336/61364
Ver los metadatos del registro completo
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Qualitative study of substituent effects on NMR15N and 17O chemical shiftsContreras, Ruben HoracioLlorente, TomásPagola, Gabriel IgnacioBustamante Pilone, Manuel GuillermoPasqualini, Enrique E.Melo, Juan IgnacioTormena, Cláudio F.1,3-DithianeHyperconjugative InteractionsFermi Contacthttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1A qualitative approach to analyze the electronic origin of substituent effects on the paramagnetic part of chemical shifts is described and applied to few model systems, where its potentiality can be appreciated. The formulation of this approach is based on the following grounds. The influence of different inter- or intramolecular interactions on a second-order property can be qualitatively predicted if it can be known how they affect the main virtual excitations entering into that second-order property. A set of consistent approximations are introduced in order to analyze the behavior of occupied and virtual orbitais that define some experimental trends of magnetic shielding constants. This approach is applied first to study the electronic origin of methyl-β substituent effects on both 15N and 17O chemical shifts, and afterward it is applied to a couple of examples of long-range substituent effects originated in charge transfer interactions such as the conjugative effect in aromatic compounds and σ-hyperconjugative interactions in saturated multicyclic compounds. © 2009 American Chemical Society.Fil: Contreras, Ruben Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Llorente, Tomás. Universidad de Buenos Aires; ArgentinaFil: Pagola, Gabriel Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Bustamante Pilone, Manuel Guillermo. Universidad de Buenos Aires; ArgentinaFil: Pasqualini, Enrique E.. Comisión Nacional de Energía Atómica; ArgentinaFil: Melo, Juan Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Tormena, Cláudio F.. Universidade Estadual de Campinas; BrasilAmerican Chemical Society2009-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/61364Contreras, Ruben Horacio; Llorente, Tomás; Pagola, Gabriel Ignacio; Bustamante Pilone, Manuel Guillermo; Pasqualini, Enrique E.; et al.; Qualitative study of substituent effects on NMR15N and 17O chemical shifts; American Chemical Society; Journal of Physical Chemistry A; 113; 36; 8-2009; 9874-98801089-5639CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/jp901926pinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:48:51Zoai:ri.conicet.gov.ar:11336/61364instacron: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 09:48:52.116CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Qualitative study of substituent effects on NMR15N and 17O chemical shifts |
title |
Qualitative study of substituent effects on NMR15N and 17O chemical shifts |
spellingShingle |
Qualitative study of substituent effects on NMR15N and 17O chemical shifts Contreras, Ruben Horacio 1,3-Dithiane Hyperconjugative Interactions Fermi Contact |
title_short |
Qualitative study of substituent effects on NMR15N and 17O chemical shifts |
title_full |
Qualitative study of substituent effects on NMR15N and 17O chemical shifts |
title_fullStr |
Qualitative study of substituent effects on NMR15N and 17O chemical shifts |
title_full_unstemmed |
Qualitative study of substituent effects on NMR15N and 17O chemical shifts |
title_sort |
Qualitative study of substituent effects on NMR15N and 17O chemical shifts |
dc.creator.none.fl_str_mv |
Contreras, Ruben Horacio Llorente, Tomás Pagola, Gabriel Ignacio Bustamante Pilone, Manuel Guillermo Pasqualini, Enrique E. Melo, Juan Ignacio Tormena, Cláudio F. |
author |
Contreras, Ruben Horacio |
author_facet |
Contreras, Ruben Horacio Llorente, Tomás Pagola, Gabriel Ignacio Bustamante Pilone, Manuel Guillermo Pasqualini, Enrique E. Melo, Juan Ignacio Tormena, Cláudio F. |
author_role |
author |
author2 |
Llorente, Tomás Pagola, Gabriel Ignacio Bustamante Pilone, Manuel Guillermo Pasqualini, Enrique E. Melo, Juan Ignacio Tormena, Cláudio F. |
author2_role |
author author author author author author |
dc.subject.none.fl_str_mv |
1,3-Dithiane Hyperconjugative Interactions Fermi Contact |
topic |
1,3-Dithiane Hyperconjugative Interactions Fermi Contact |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
A qualitative approach to analyze the electronic origin of substituent effects on the paramagnetic part of chemical shifts is described and applied to few model systems, where its potentiality can be appreciated. The formulation of this approach is based on the following grounds. The influence of different inter- or intramolecular interactions on a second-order property can be qualitatively predicted if it can be known how they affect the main virtual excitations entering into that second-order property. A set of consistent approximations are introduced in order to analyze the behavior of occupied and virtual orbitais that define some experimental trends of magnetic shielding constants. This approach is applied first to study the electronic origin of methyl-β substituent effects on both 15N and 17O chemical shifts, and afterward it is applied to a couple of examples of long-range substituent effects originated in charge transfer interactions such as the conjugative effect in aromatic compounds and σ-hyperconjugative interactions in saturated multicyclic compounds. © 2009 American Chemical Society. Fil: Contreras, Ruben Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina Fil: Llorente, Tomás. Universidad de Buenos Aires; Argentina Fil: Pagola, Gabriel Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina Fil: Bustamante Pilone, Manuel Guillermo. Universidad de Buenos Aires; Argentina Fil: Pasqualini, Enrique E.. Comisión Nacional de Energía Atómica; Argentina Fil: Melo, Juan Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina Fil: Tormena, Cláudio F.. Universidade Estadual de Campinas; Brasil |
description |
A qualitative approach to analyze the electronic origin of substituent effects on the paramagnetic part of chemical shifts is described and applied to few model systems, where its potentiality can be appreciated. The formulation of this approach is based on the following grounds. The influence of different inter- or intramolecular interactions on a second-order property can be qualitatively predicted if it can be known how they affect the main virtual excitations entering into that second-order property. A set of consistent approximations are introduced in order to analyze the behavior of occupied and virtual orbitais that define some experimental trends of magnetic shielding constants. This approach is applied first to study the electronic origin of methyl-β substituent effects on both 15N and 17O chemical shifts, and afterward it is applied to a couple of examples of long-range substituent effects originated in charge transfer interactions such as the conjugative effect in aromatic compounds and σ-hyperconjugative interactions in saturated multicyclic compounds. © 2009 American Chemical Society. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-08 |
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/11336/61364 Contreras, Ruben Horacio; Llorente, Tomás; Pagola, Gabriel Ignacio; Bustamante Pilone, Manuel Guillermo; Pasqualini, Enrique E.; et al.; Qualitative study of substituent effects on NMR15N and 17O chemical shifts; American Chemical Society; Journal of Physical Chemistry A; 113; 36; 8-2009; 9874-9880 1089-5639 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/61364 |
identifier_str_mv |
Contreras, Ruben Horacio; Llorente, Tomás; Pagola, Gabriel Ignacio; Bustamante Pilone, Manuel Guillermo; Pasqualini, Enrique E.; et al.; Qualitative study of substituent effects on NMR15N and 17O chemical shifts; American Chemical Society; Journal of Physical Chemistry A; 113; 36; 8-2009; 9874-9880 1089-5639 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/jp901926p |
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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13.070432 |