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Abstract:

At present times it is usual practice to mark biological compounds replacing an H for an F atom to study, by means of 19F NMR spectroscopy, aspects such as binding sites and molecular folding features. This interesting methodology could nicely be improved if it is known how proximity interactions on the F atom affect its electronic structure as gauged through high-resolution 19F NMR spectroscopy. This is the main aim of the present work and, to this end, differently substituted peri-difluoronaphthalenes are chosen as model systems. In such compounds are rationalized some interesting aspects of the diamagnetic and paramagnetic parts of the 19F nuclear magnetic shielding tensor as well as the transmission mechanisms for the PSO and FC contributions to 4JF1F8 indirect nuclear spin-spin coupling constants. © 2014 American Chemical Society.

Registro:

Documento: Artículo
Título:Revisiting NMR through-space J FF spin-spin coupling constants for getting insight into proximate F-F interactions
Autor:Contreras, R.H.; Llorente, T.; Ducati, L.C.; Tormena, C.F.
Filiación:Department of Physics, FCEyN, University of Buenos Aires, C1053ABJ Buenos Aires, Argentina
Institute of Chemistry, University of Sao Paulo -USP, P.O. Box 26077, 05513-970 Sao Paulo SP, Brazil
Chemistry Institute, University of Campinas, UNICAMP, P.O. Box 6154, 13083-970 Campinas SP, Brazil
Palabras clave:Electronic structure; Nuclear magnetic resonance spectroscopy; Biological compounds; F-f interactions; High resolution; Model system; Nuclear magnetic shieldings; Spin-spin coupling constants; Transmission mechanisms; Magnetic shielding
Año:2014
Volumen:118
Número:27
Página de inicio:5068
Página de fin:5075
DOI: http://dx.doi.org/10.1021/jp501929t
Título revista:Journal of Physical Chemistry A
Título revista abreviado:J Phys Chem A
ISSN:10895639
CODEN:JPCAF
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10895639_v118_n27_p5068_Contreras

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Citas:

---------- APA ----------
Contreras, R.H., Llorente, T., Ducati, L.C. & Tormena, C.F. (2014) . Revisiting NMR through-space J FF spin-spin coupling constants for getting insight into proximate F-F interactions. Journal of Physical Chemistry A, 118(27), 5068-5075.
http://dx.doi.org/10.1021/jp501929t
---------- CHICAGO ----------
Contreras, R.H., Llorente, T., Ducati, L.C., Tormena, C.F. "Revisiting NMR through-space J FF spin-spin coupling constants for getting insight into proximate F-F interactions" . Journal of Physical Chemistry A 118, no. 27 (2014) : 5068-5075.
http://dx.doi.org/10.1021/jp501929t
---------- MLA ----------
Contreras, R.H., Llorente, T., Ducati, L.C., Tormena, C.F. "Revisiting NMR through-space J FF spin-spin coupling constants for getting insight into proximate F-F interactions" . Journal of Physical Chemistry A, vol. 118, no. 27, 2014, pp. 5068-5075.
http://dx.doi.org/10.1021/jp501929t
---------- VANCOUVER ----------
Contreras, R.H., Llorente, T., Ducati, L.C., Tormena, C.F. Revisiting NMR through-space J FF spin-spin coupling constants for getting insight into proximate F-F interactions. J Phys Chem A. 2014;118(27):5068-5075.
http://dx.doi.org/10.1021/jp501929t