Stereoelectronic interactions and molecular properties: An NBO-based study of uracil

Autores
Sproviero, Eduardo M.; Burton, Gerardo
Año de publicación
2003
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The contributions of stereoelectronic interactions to several molecular properties are used to analyze the propagation of information between different parts of the uracil molecule with a method that is based on the natural bond orbital (NBO) deletion technique. The emphasis is not on the effect of the contributions of localized orbitals to selected properties but rather on their interactions, giving information that is complementary to that resulting from a standard localized molecular orbital contribution. The analysis of how information between orbitals is transmitted throughout the molecule allows interpretation of the ways in which an interaction can affect a molecular property localized in the same region or in a different region of the molecule. A network of stereoelectronic interactions was identified in the uracil molecule, and the relative influences of the interactions that transmit information between different parts of the molecule were evaluated. An analysis was performed over localized properties on atoms and bonds of the two carbonyl groups, namely bond orders, distribution of electronic charge, and NMR shielding tensors. Interactions n(N3) → π*(C4=O) and n(N1) → π*(C5=C6) were the most important delocalizations that carry information concerning the change of substituents at C-5, whereas interactions n(N1) → π*(C2=O) and n(N3) rarr; π*(C2=O) were those mainly responsible for transmitting this information to the C-2 uracil carbonyl (C2=O) properties.
Fil: Sproviero, Eduardo M.. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Orgánica; Argentina
Fil: Burton, Gerardo. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Orgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad de Microanálisis y Métodos Físicos en Química Orgánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Unidad de Microanálisis y Métodos Físicos en Química Orgánica; Argentina
Materia
NBO
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:11336/88190

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spelling Stereoelectronic interactions and molecular properties: An NBO-based study of uracilSproviero, Eduardo M.Burton, GerardoNBOhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The contributions of stereoelectronic interactions to several molecular properties are used to analyze the propagation of information between different parts of the uracil molecule with a method that is based on the natural bond orbital (NBO) deletion technique. The emphasis is not on the effect of the contributions of localized orbitals to selected properties but rather on their interactions, giving information that is complementary to that resulting from a standard localized molecular orbital contribution. The analysis of how information between orbitals is transmitted throughout the molecule allows interpretation of the ways in which an interaction can affect a molecular property localized in the same region or in a different region of the molecule. A network of stereoelectronic interactions was identified in the uracil molecule, and the relative influences of the interactions that transmit information between different parts of the molecule were evaluated. An analysis was performed over localized properties on atoms and bonds of the two carbonyl groups, namely bond orders, distribution of electronic charge, and NMR shielding tensors. Interactions n(N3) → π*(C4=O) and n(N1) → π*(C5=C6) were the most important delocalizations that carry information concerning the change of substituents at C-5, whereas interactions n(N1) → π*(C2=O) and n(N3) rarr; π*(C2=O) were those mainly responsible for transmitting this information to the C-2 uracil carbonyl (C2=O) properties.Fil: Sproviero, Eduardo M.. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Orgánica; ArgentinaFil: Burton, Gerardo. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Orgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad de Microanálisis y Métodos Físicos en Química Orgánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Unidad de Microanálisis y Métodos Físicos en Química Orgánica; ArgentinaAmerican Chemical Society2003-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/88190Sproviero, Eduardo M.; Burton, Gerardo; Stereoelectronic interactions and molecular properties: An NBO-based study of uracil; American Chemical Society; Journal of Physical Chemistry A; 107; 29; 7-2003; 5544-55541089-5639CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/abs/10.1021/jp0271763info:eu-repo/semantics/altIdentifier/doi/10.1021/jp0271763info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:43:20Zoai:ri.conicet.gov.ar:11336/88190instacron: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 09:43:20.298CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Stereoelectronic interactions and molecular properties: An NBO-based study of uracil
title Stereoelectronic interactions and molecular properties: An NBO-based study of uracil
spellingShingle Stereoelectronic interactions and molecular properties: An NBO-based study of uracil
Sproviero, Eduardo M.
NBO
title_short Stereoelectronic interactions and molecular properties: An NBO-based study of uracil
title_full Stereoelectronic interactions and molecular properties: An NBO-based study of uracil
title_fullStr Stereoelectronic interactions and molecular properties: An NBO-based study of uracil
title_full_unstemmed Stereoelectronic interactions and molecular properties: An NBO-based study of uracil
title_sort Stereoelectronic interactions and molecular properties: An NBO-based study of uracil
dc.creator.none.fl_str_mv Sproviero, Eduardo M.
Burton, Gerardo
author Sproviero, Eduardo M.
author_facet Sproviero, Eduardo M.
Burton, Gerardo
author_role author
author2 Burton, Gerardo
author2_role author
dc.subject.none.fl_str_mv NBO
topic NBO
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 contributions of stereoelectronic interactions to several molecular properties are used to analyze the propagation of information between different parts of the uracil molecule with a method that is based on the natural bond orbital (NBO) deletion technique. The emphasis is not on the effect of the contributions of localized orbitals to selected properties but rather on their interactions, giving information that is complementary to that resulting from a standard localized molecular orbital contribution. The analysis of how information between orbitals is transmitted throughout the molecule allows interpretation of the ways in which an interaction can affect a molecular property localized in the same region or in a different region of the molecule. A network of stereoelectronic interactions was identified in the uracil molecule, and the relative influences of the interactions that transmit information between different parts of the molecule were evaluated. An analysis was performed over localized properties on atoms and bonds of the two carbonyl groups, namely bond orders, distribution of electronic charge, and NMR shielding tensors. Interactions n(N3) → π*(C4=O) and n(N1) → π*(C5=C6) were the most important delocalizations that carry information concerning the change of substituents at C-5, whereas interactions n(N1) → π*(C2=O) and n(N3) rarr; π*(C2=O) were those mainly responsible for transmitting this information to the C-2 uracil carbonyl (C2=O) properties.
Fil: Sproviero, Eduardo M.. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Orgánica; Argentina
Fil: Burton, Gerardo. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Orgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad de Microanálisis y Métodos Físicos en Química Orgánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Unidad de Microanálisis y Métodos Físicos en Química Orgánica; Argentina
description The contributions of stereoelectronic interactions to several molecular properties are used to analyze the propagation of information between different parts of the uracil molecule with a method that is based on the natural bond orbital (NBO) deletion technique. The emphasis is not on the effect of the contributions of localized orbitals to selected properties but rather on their interactions, giving information that is complementary to that resulting from a standard localized molecular orbital contribution. The analysis of how information between orbitals is transmitted throughout the molecule allows interpretation of the ways in which an interaction can affect a molecular property localized in the same region or in a different region of the molecule. A network of stereoelectronic interactions was identified in the uracil molecule, and the relative influences of the interactions that transmit information between different parts of the molecule were evaluated. An analysis was performed over localized properties on atoms and bonds of the two carbonyl groups, namely bond orders, distribution of electronic charge, and NMR shielding tensors. Interactions n(N3) → π*(C4=O) and n(N1) → π*(C5=C6) were the most important delocalizations that carry information concerning the change of substituents at C-5, whereas interactions n(N1) → π*(C2=O) and n(N3) rarr; π*(C2=O) were those mainly responsible for transmitting this information to the C-2 uracil carbonyl (C2=O) properties.
publishDate 2003
dc.date.none.fl_str_mv 2003-07
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/11336/88190
Sproviero, Eduardo M.; Burton, Gerardo; Stereoelectronic interactions and molecular properties: An NBO-based study of uracil; American Chemical Society; Journal of Physical Chemistry A; 107; 29; 7-2003; 5544-5554
1089-5639
CONICET Digital
CONICET
url http://hdl.handle.net/11336/88190
identifier_str_mv Sproviero, Eduardo M.; Burton, Gerardo; Stereoelectronic interactions and molecular properties: An NBO-based study of uracil; American Chemical Society; Journal of Physical Chemistry A; 107; 29; 7-2003; 5544-5554
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/url/https://pubs.acs.org/doi/abs/10.1021/jp0271763
info:eu-repo/semantics/altIdentifier/doi/10.1021/jp0271763
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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