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Abstract:

The INDOR technique has been applied to determine the sign of the coupling constant between protons in the ring position a in 4-aminopyridine and 4-chloropyridine which, contrary to the usual assumptions, were found to be positive, a result in agreement with the trend in other heterocyclic compounds. © 1980.

Registro:

Documento: Artículo
Título:Four-bond interproton spin-spin coupling in pyridines
Autor:Contreras, R.H.; Kowalewski, V.J.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellon 1, 1428 Buenos Aires, Argentina
Año:1980
Volumen:39
Número:2
Página de inicio:291
Página de fin:295
DOI: http://dx.doi.org/10.1016/0022-2364(80)90137-7
Título revista:Journal of Magnetic Resonance (1969)
ISSN:00222364
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222364_v39_n2_p291_Contreras

Referencias:

  • Kowalewski, De Kowalewski, Ferrá, (1966) J. Mol. Spectrosc., 20, p. 203
  • Castellano, Sun, Kostelnik, (1967) J. Chem. Phys., 46, p. 327
  • Vögeli, Von Philipsborn, 13C and1H NMR spectroscopic studies on the structure of N-methyl-3-pyridone and 3-hydroxypyridine (1973) Organic Magnetic Resonance, 5, p. 551
  • Rowbotham, Schaefer, Sigma and Pi Electron Contributions to Long-range Spin–Spin Coupling Constants in the Methyl Derivatives of the Fluoropyridines (1972) Canadian Journal of Chemistry, 50, p. 2344
  • Hamm, Von Philipsborn, Protonenresonanzspektren von aromatischen N-Oxiden Berechnung der chemischen Verschiebungen, verursacht durch die Feldeffekte der N?O-gruppe (1971) Helvetica Chimica Acta, 54, p. 2363
  • Wamsler, Nielsen, Pedersen, Schaumburg, (1978) J. Magn. Reson., 31, p. 177
  • Kowalewski, (1969) Progress in NMR Spectroscopy, 5, p. 1. , J.W Emsley, J Feeney, L.H Sutcliffe, 2nd ed., Pergamon, London
  • Torsom, (1976) Progr. Phys. Org. Chem., 12, p. 1
  • Emsley, Feeney, Sutcliffe, (1968) High Resolution NMR Spectroscopy, 1. , 2nd ed., Pergamon, London
  • Kuhlmann, Baldeschwieler, The Assignment of N.M.R. Spectra Using the Nuclear Overhauser Effect (1963) Journal of the American Chemical Society, 85, p. 1010
  • Moritz, Paul, The relative sign of the proton-proton couplings in diazine N-oxide (1969) Australian Journal of Chemistry, 22, p. 1305
  • Bothner-By, Castellano, (1966) LAOCN 3, , Mellon Institute, Pittsburgh, Pa

Citas:

---------- APA ----------
Contreras, R.H. & Kowalewski, V.J. (1980) . Four-bond interproton spin-spin coupling in pyridines. Journal of Magnetic Resonance (1969), 39(2), 291-295.
http://dx.doi.org/10.1016/0022-2364(80)90137-7
---------- CHICAGO ----------
Contreras, R.H., Kowalewski, V.J. "Four-bond interproton spin-spin coupling in pyridines" . Journal of Magnetic Resonance (1969) 39, no. 2 (1980) : 291-295.
http://dx.doi.org/10.1016/0022-2364(80)90137-7
---------- MLA ----------
Contreras, R.H., Kowalewski, V.J. "Four-bond interproton spin-spin coupling in pyridines" . Journal of Magnetic Resonance (1969), vol. 39, no. 2, 1980, pp. 291-295.
http://dx.doi.org/10.1016/0022-2364(80)90137-7
---------- VANCOUVER ----------
Contreras, R.H., Kowalewski, V.J. Four-bond interproton spin-spin coupling in pyridines. 1980;39(2):291-295.
http://dx.doi.org/10.1016/0022-2364(80)90137-7