Core-dependent and ligand-dependent relativistic corrections to the nuclear magnetic shieldings in MH4-nYn (n=0-4; M = Si, Ge, Sn, and Y = H, F, Cl, Br, I) model compounds
- Autores
- Maldonado, Alejandro Fabian; Aucar, Gustavo Adolfo; Melo, Juan Ignacio
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The nuclear magnetic shieldings of Si, Ge, and Sn in MH 4−n Y n (M = Si, Ge, Sn; Y = F, Cl, Br, I and n=1-4)molecular systems are highly influenced by the substitution of one or more hydrogens by heavy-halogen atoms. We applied the linear response elimination of small components (LRESC) formalism to calculate those shieldings and learn whether including only a few of the leading relativistic correction terms is sufficient to be able to quantitatively reproduce the full relativistic value. It was observed that the nuclear magnetic shieldings change as the number of heavy halogen substituents and their weights vary, and the pattern of σ(M) generally does not exhibit the normal halogen dependence (NHD) behavior that can be seen in similar molecular systems containing carbon atoms. We also analyzed each relativistic correction afforded by the LRESC method and split them in two: core-dependent and ligand-dependent contributions; we then looked for the electronic mechanisms involved in the different relativistic effects and in the total relativistic value. Based on this analysis, we were able to study the electronic mechanism involved in a recently proposed relativistic effect, the "heavy atom effect on vicinal heavy atom" (HAVHA), in more detail. We found that the main electronic mechanism is the spin-orbit or σ T(3) correction, although other corrections p such as σ S(1) and σ S(3) are also important. Finally, we analyzed p p proton magnetic shieldings and found that, for molecules containing Sn as the central atom, σ(H) decreases as the number of heavy halogen substituents (of the same type: either F, Cl, or Br) increases, albeit at different rates for different halogens. σ(H) only increase as the number of halogen substituents increases if the halogen is iodine.
Fil: Maldonado, Alejandro Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Modelado E Innovación Tecnológica. Universidad Nacional del Nordeste. Facultad de Cs.exactas Naturales y Agrimensura. Instituto de Modelado E Innovación Tecnologica; Argentina
Fil: Aucar, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Modelado E Innovación Tecnológica. Universidad Nacional del Nordeste. Facultad de Cs.exactas Naturales y Agrimensura. Instituto de Modelado E Innovación Tecnologica; 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 - Materia
-
Nmr
Relativistic Effects
Lresc
Core Effects
Polarization Propagators - 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:11336/16485
Ver los metadatos del registro completo
id |
CONICETDig_bb72fa0345cb2665e898d6431b6d1b81 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/16485 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Core-dependent and ligand-dependent relativistic corrections to the nuclear magnetic shieldings in MH4-nYn (n=0-4; M = Si, Ge, Sn, and Y = H, F, Cl, Br, I) model compoundsMaldonado, Alejandro FabianAucar, Gustavo AdolfoMelo, Juan IgnacioNmrRelativistic EffectsLrescCore EffectsPolarization Propagatorshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The nuclear magnetic shieldings of Si, Ge, and Sn in MH 4−n Y n (M = Si, Ge, Sn; Y = F, Cl, Br, I and n=1-4)molecular systems are highly influenced by the substitution of one or more hydrogens by heavy-halogen atoms. We applied the linear response elimination of small components (LRESC) formalism to calculate those shieldings and learn whether including only a few of the leading relativistic correction terms is sufficient to be able to quantitatively reproduce the full relativistic value. It was observed that the nuclear magnetic shieldings change as the number of heavy halogen substituents and their weights vary, and the pattern of σ(M) generally does not exhibit the normal halogen dependence (NHD) behavior that can be seen in similar molecular systems containing carbon atoms. We also analyzed each relativistic correction afforded by the LRESC method and split them in two: core-dependent and ligand-dependent contributions; we then looked for the electronic mechanisms involved in the different relativistic effects and in the total relativistic value. Based on this analysis, we were able to study the electronic mechanism involved in a recently proposed relativistic effect, the "heavy atom effect on vicinal heavy atom" (HAVHA), in more detail. We found that the main electronic mechanism is the spin-orbit or σ T(3) correction, although other corrections p such as σ S(1) and σ S(3) are also important. Finally, we analyzed p p proton magnetic shieldings and found that, for molecules containing Sn as the central atom, σ(H) decreases as the number of heavy halogen substituents (of the same type: either F, Cl, or Br) increases, albeit at different rates for different halogens. σ(H) only increase as the number of halogen substituents increases if the halogen is iodine.Fil: Maldonado, Alejandro Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Modelado E Innovación Tecnológica. Universidad Nacional del Nordeste. Facultad de Cs.exactas Naturales y Agrimensura. Instituto de Modelado E Innovación Tecnologica; ArgentinaFil: Aucar, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Modelado E Innovación Tecnológica. Universidad Nacional del Nordeste. Facultad de Cs.exactas Naturales y Agrimensura. Instituto de Modelado E Innovación Tecnologica; 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; ArgentinaSpringer Verlag Berlín2014-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/16485Maldonado, Alejandro Fabian; Aucar, Gustavo Adolfo; Melo, Juan Ignacio; Core-dependent and ligand-dependent relativistic corrections to the nuclear magnetic shieldings in MH4-nYn (n=0-4; M = Si, Ge, Sn, and Y = H, F, Cl, Br, I) model compounds; Springer Verlag Berlín; Journal Of Molecular Modeling - (online); 20; 9-2014; 2417-24321610-29400948-5023enginfo:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00894-014-2417-zinfo:eu-repo/semantics/altIdentifier/doi/10.1007/s00894-014-2417-zinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:36:07Zoai:ri.conicet.gov.ar:11336/16485instacron: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 09:36:07.683CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Core-dependent and ligand-dependent relativistic corrections to the nuclear magnetic shieldings in MH4-nYn (n=0-4; M = Si, Ge, Sn, and Y = H, F, Cl, Br, I) model compounds |
title |
Core-dependent and ligand-dependent relativistic corrections to the nuclear magnetic shieldings in MH4-nYn (n=0-4; M = Si, Ge, Sn, and Y = H, F, Cl, Br, I) model compounds |
spellingShingle |
Core-dependent and ligand-dependent relativistic corrections to the nuclear magnetic shieldings in MH4-nYn (n=0-4; M = Si, Ge, Sn, and Y = H, F, Cl, Br, I) model compounds Maldonado, Alejandro Fabian Nmr Relativistic Effects Lresc Core Effects Polarization Propagators |
title_short |
Core-dependent and ligand-dependent relativistic corrections to the nuclear magnetic shieldings in MH4-nYn (n=0-4; M = Si, Ge, Sn, and Y = H, F, Cl, Br, I) model compounds |
title_full |
Core-dependent and ligand-dependent relativistic corrections to the nuclear magnetic shieldings in MH4-nYn (n=0-4; M = Si, Ge, Sn, and Y = H, F, Cl, Br, I) model compounds |
title_fullStr |
Core-dependent and ligand-dependent relativistic corrections to the nuclear magnetic shieldings in MH4-nYn (n=0-4; M = Si, Ge, Sn, and Y = H, F, Cl, Br, I) model compounds |
title_full_unstemmed |
Core-dependent and ligand-dependent relativistic corrections to the nuclear magnetic shieldings in MH4-nYn (n=0-4; M = Si, Ge, Sn, and Y = H, F, Cl, Br, I) model compounds |
title_sort |
Core-dependent and ligand-dependent relativistic corrections to the nuclear magnetic shieldings in MH4-nYn (n=0-4; M = Si, Ge, Sn, and Y = H, F, Cl, Br, I) model compounds |
dc.creator.none.fl_str_mv |
Maldonado, Alejandro Fabian Aucar, Gustavo Adolfo Melo, Juan Ignacio |
author |
Maldonado, Alejandro Fabian |
author_facet |
Maldonado, Alejandro Fabian Aucar, Gustavo Adolfo Melo, Juan Ignacio |
author_role |
author |
author2 |
Aucar, Gustavo Adolfo Melo, Juan Ignacio |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Nmr Relativistic Effects Lresc Core Effects Polarization Propagators |
topic |
Nmr Relativistic Effects Lresc Core Effects Polarization Propagators |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The nuclear magnetic shieldings of Si, Ge, and Sn in MH 4−n Y n (M = Si, Ge, Sn; Y = F, Cl, Br, I and n=1-4)molecular systems are highly influenced by the substitution of one or more hydrogens by heavy-halogen atoms. We applied the linear response elimination of small components (LRESC) formalism to calculate those shieldings and learn whether including only a few of the leading relativistic correction terms is sufficient to be able to quantitatively reproduce the full relativistic value. It was observed that the nuclear magnetic shieldings change as the number of heavy halogen substituents and their weights vary, and the pattern of σ(M) generally does not exhibit the normal halogen dependence (NHD) behavior that can be seen in similar molecular systems containing carbon atoms. We also analyzed each relativistic correction afforded by the LRESC method and split them in two: core-dependent and ligand-dependent contributions; we then looked for the electronic mechanisms involved in the different relativistic effects and in the total relativistic value. Based on this analysis, we were able to study the electronic mechanism involved in a recently proposed relativistic effect, the "heavy atom effect on vicinal heavy atom" (HAVHA), in more detail. We found that the main electronic mechanism is the spin-orbit or σ T(3) correction, although other corrections p such as σ S(1) and σ S(3) are also important. Finally, we analyzed p p proton magnetic shieldings and found that, for molecules containing Sn as the central atom, σ(H) decreases as the number of heavy halogen substituents (of the same type: either F, Cl, or Br) increases, albeit at different rates for different halogens. σ(H) only increase as the number of halogen substituents increases if the halogen is iodine. Fil: Maldonado, Alejandro Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Modelado E Innovación Tecnológica. Universidad Nacional del Nordeste. Facultad de Cs.exactas Naturales y Agrimensura. Instituto de Modelado E Innovación Tecnologica; Argentina Fil: Aucar, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Modelado E Innovación Tecnológica. Universidad Nacional del Nordeste. Facultad de Cs.exactas Naturales y Agrimensura. Instituto de Modelado E Innovación Tecnologica; 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 |
description |
The nuclear magnetic shieldings of Si, Ge, and Sn in MH 4−n Y n (M = Si, Ge, Sn; Y = F, Cl, Br, I and n=1-4)molecular systems are highly influenced by the substitution of one or more hydrogens by heavy-halogen atoms. We applied the linear response elimination of small components (LRESC) formalism to calculate those shieldings and learn whether including only a few of the leading relativistic correction terms is sufficient to be able to quantitatively reproduce the full relativistic value. It was observed that the nuclear magnetic shieldings change as the number of heavy halogen substituents and their weights vary, and the pattern of σ(M) generally does not exhibit the normal halogen dependence (NHD) behavior that can be seen in similar molecular systems containing carbon atoms. We also analyzed each relativistic correction afforded by the LRESC method and split them in two: core-dependent and ligand-dependent contributions; we then looked for the electronic mechanisms involved in the different relativistic effects and in the total relativistic value. Based on this analysis, we were able to study the electronic mechanism involved in a recently proposed relativistic effect, the "heavy atom effect on vicinal heavy atom" (HAVHA), in more detail. We found that the main electronic mechanism is the spin-orbit or σ T(3) correction, although other corrections p such as σ S(1) and σ S(3) are also important. Finally, we analyzed p p proton magnetic shieldings and found that, for molecules containing Sn as the central atom, σ(H) decreases as the number of heavy halogen substituents (of the same type: either F, Cl, or Br) increases, albeit at different rates for different halogens. σ(H) only increase as the number of halogen substituents increases if the halogen is iodine. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-09 |
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/11336/16485 Maldonado, Alejandro Fabian; Aucar, Gustavo Adolfo; Melo, Juan Ignacio; Core-dependent and ligand-dependent relativistic corrections to the nuclear magnetic shieldings in MH4-nYn (n=0-4; M = Si, Ge, Sn, and Y = H, F, Cl, Br, I) model compounds; Springer Verlag Berlín; Journal Of Molecular Modeling - (online); 20; 9-2014; 2417-2432 1610-2940 0948-5023 |
url |
http://hdl.handle.net/11336/16485 |
identifier_str_mv |
Maldonado, Alejandro Fabian; Aucar, Gustavo Adolfo; Melo, Juan Ignacio; Core-dependent and ligand-dependent relativistic corrections to the nuclear magnetic shieldings in MH4-nYn (n=0-4; M = Si, Ge, Sn, and Y = H, F, Cl, Br, I) model compounds; Springer Verlag Berlín; Journal Of Molecular Modeling - (online); 20; 9-2014; 2417-2432 1610-2940 0948-5023 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00894-014-2417-z info:eu-repo/semantics/altIdentifier/doi/10.1007/s00894-014-2417-z |
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 application/pdf |
dc.publisher.none.fl_str_mv |
Springer Verlag Berlín |
publisher.none.fl_str_mv |
Springer Verlag Berlín |
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 |
_version_ |
1844613130164895744 |
score |
13.070432 |