Abstract:
The differential Biot-Savart law of classical electrodynamics was applied to develop a ring current model for the magnetic shielding of the carbon nucleus in benzene. It is shown that the local effect of the π currents, induced by a magnetic field normal to the molecular plane, on the σC out-of-plane shielding tensor component vanishes. However, approximately 10% of σC is due to the shielding contributions from π current density in the region of the other carbon atoms. Magnetic shielding density maps obtained via quantum mechanical procedures confirm the predictions of the classical model. Copyright © 2004 John Wiley & Sons, Ltd.
Registro:
Documento: |
Artículo
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Título: | Ring current effects on nuclear magnetic shielding of carbon in the benzene molecule |
Autor: | Ferraro, M.B.; Faglioni, F.; Ligabue, A.; Pelloni, S.; Lazzeretti, P. |
Filiación: | Departamento de Física, Facultad de Ciencias Exactas Y Naturales, Ciudad Universitaria, Pab. I, (1428) Buenos Aires, Argentina Dipartimento di Chimica, Università degli Studi di Modena e Reggio Emilia, Via Campi 183, 41100 Modena, Italy
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Palabras clave: | Benzene; Carbon; Differential Biot-Savart law; Magnetic shielding; NMR; Ring current; benzene; carbon; article; atom; density; electric current; magnetism; molecular model; quantum mechanics; chemistry; mathematics; methodology; nuclear magnetic resonance spectroscopy; quantum theory; Benzene; Carbon; Magnetic Resonance Spectroscopy; Mathematics; Quantum Theory |
Año: | 2005
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Volumen: | 43
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Número: | 4
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Página de inicio: | 316
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Página de fin: | 320
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DOI: |
http://dx.doi.org/10.1002/mrc.1536 |
Título revista: | Magnetic Resonance in Chemistry
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Título revista abreviado: | Magn. Reson. Chem.
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ISSN: | 07491581
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CODEN: | MRCHE
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CAS: | benzene, 71-43-2; carbon, 7440-44-0; Benzene, 71-43-2; Carbon, 7440-44-0
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07491581_v43_n4_p316_Ferraro |
Referencias:
- Appleman, B.R., Dailey, B.P., (1974) Adv. Magn. Reson., 7, p. 231
- Englert, G., (1972) Z. Naturforsch., Teil A, 27, p. 715
- Jameson, A.K., Jameson, C.J., (1987) Chem. Phys. Lett., 134, p. 461
- Fleischer, U., Kutzelnigg, W., Lazzeretti, P., Mühlenkamp, V., (1994) J. Am. Chem. Soc., 116, p. 5298
- Lazzeretti, P., (2000) Prog. Nucl. Magn. Reson. Spectrosc., 36, p. 1
- Ligabue, A., Soncini, A., Lazzeretti, P., (2002) J. Am. Chem. Soc., 124, p. 2008
- Ferraro, M.B., Lazzeretti, P., Viglione, R.G., Zanasi, R., (2004) Chem. Phys. Lett., 390, p. 268
- Viglione, R.G., Zanasi, R., Lazzeretti, P., (2004) Org. Lett., 6, p. 2265
- Lazzeretti, P., (2004) Phys. Chem. Chem. Phys., 6, p. 217
- Wannere, C.S., Schleyer, Pv.R., (2003) Org. Lett., 5, p. 605
- Soncini, A., Fowler, P.W., Lazzeretti, P., Zanasi, R., Chem. Phys. Lett., , ASAP article on the web
- Pelloni, S., Ligabue, A., Lazzeretti, P., (2004) Org. Lett., 6, p. 4451
- Cuesta, I.G., Ligabue, A., De Merás, A.S., Lazzeretti, P., Chem. Phys. Lett., , in press
- Jackson, J.D., (1999) Classical Electrodynamics (3rd Edn), p. 175. , Wiley: New York
- Jameson, C.J., Buckingham, A.D., (1979) J. Phys. Chem., 83, p. 3366
- Jameson, C.J., Buckingham, A.D., (1980) J. Chem. Phys., 73, p. 5684
- Lazzeretti, P., Malagoli, M., Zanasi, R., (1994) Chem. Phys. Lett., 220, p. 299
- Johnson, C.E., Bovey, F.A., (1958) J. Chem. Phys., 29, p. 1012
- Waugh, J.S., Fessenden, R.W., (1958) J. Am. Chem. Soc., 80, p. 6697
- Farnum, D.G., Wilcox, C.F., (1967) J. Am. Chem. Soc., 89, p. 5379
- Lazzeretti, P., (2003) Handbook of Molecular Physics and Quantum Chemistry, 3 (1 PART), p. 53. , Wilson S (ed). Wiley: Chichester, Chapt. 3
- Lazzeretti, P., Zanasi, R., (1983) Chem. Phys. Lett., 100, p. 67
- Keith, T.A., Bader, R.F.W., (1996) Can. J. Chem., 74, p. 185
- Sauer, S.P.A., Paidarová, I., Oddershede, J., (1994) Mol. Phys., 81, p. 87
- Diercksen, G., McWeeny, R., (1966) J. Chem. Phys., 44, p. 3554
- Keith, T.A., Bader, R.F.W., (1993) Chem. Phys. Lett., 210, p. 223
- Zanasi, R., (1996) J. Chem. Phys., 105, p. 1460
- Lazzeretti, P., Malagoli, M., Zanasi, R., (1995) J. Chem. Phys., 102, p. 9619
- Hirschfelder, J.O., (1978) J. Chem. Phys., 68, p. 5151
Citas:
---------- APA ----------
Ferraro, M.B., Faglioni, F., Ligabue, A., Pelloni, S. & Lazzeretti, P.
(2005)
. Ring current effects on nuclear magnetic shielding of carbon in the benzene molecule. Magnetic Resonance in Chemistry, 43(4), 316-320.
http://dx.doi.org/10.1002/mrc.1536---------- CHICAGO ----------
Ferraro, M.B., Faglioni, F., Ligabue, A., Pelloni, S., Lazzeretti, P.
"Ring current effects on nuclear magnetic shielding of carbon in the benzene molecule"
. Magnetic Resonance in Chemistry 43, no. 4
(2005) : 316-320.
http://dx.doi.org/10.1002/mrc.1536---------- MLA ----------
Ferraro, M.B., Faglioni, F., Ligabue, A., Pelloni, S., Lazzeretti, P.
"Ring current effects on nuclear magnetic shielding of carbon in the benzene molecule"
. Magnetic Resonance in Chemistry, vol. 43, no. 4, 2005, pp. 316-320.
http://dx.doi.org/10.1002/mrc.1536---------- VANCOUVER ----------
Ferraro, M.B., Faglioni, F., Ligabue, A., Pelloni, S., Lazzeretti, P. Ring current effects on nuclear magnetic shielding of carbon in the benzene molecule. Magn. Reson. Chem. 2005;43(4):316-320.
http://dx.doi.org/10.1002/mrc.1536