Abstract:
The methoxyflurane NMR spectrum was reexamined looking for a through-space transmitted four-bond FH coupling. This coupling was measured and its sign determined relative to the corresponding vicinal FH coupling. This sign determination required a triple irradiation technique, which is also described. A Karplus-like equation for the vicinal FH couplings yields the relative populations of both preferential conformers, and determines the positive sign of both three- and four-bond FH couplings. © 1986.
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Citas:
---------- APA ----------
Balonga, P.E., Kowalewski, V.J. & Contreras, R.H.
(1986)
. The sign of the four-bond FH coupling in methoxyflurane. Spectrochimica Acta Part A: Molecular Spectroscopy, 42(1), 23-26.
http://dx.doi.org/10.1016/0584-8539(86)80125-8---------- CHICAGO ----------
Balonga, P.E., Kowalewski, V.J., Contreras, R.H.
"The sign of the four-bond FH coupling in methoxyflurane"
. Spectrochimica Acta Part A: Molecular Spectroscopy 42, no. 1
(1986) : 23-26.
http://dx.doi.org/10.1016/0584-8539(86)80125-8---------- MLA ----------
Balonga, P.E., Kowalewski, V.J., Contreras, R.H.
"The sign of the four-bond FH coupling in methoxyflurane"
. Spectrochimica Acta Part A: Molecular Spectroscopy, vol. 42, no. 1, 1986, pp. 23-26.
http://dx.doi.org/10.1016/0584-8539(86)80125-8---------- VANCOUVER ----------
Balonga, P.E., Kowalewski, V.J., Contreras, R.H. The sign of the four-bond FH coupling in methoxyflurane. Spectrochim. Acta Part A Mol. Spectrosc. 1986;42(1):23-26.
http://dx.doi.org/10.1016/0584-8539(86)80125-8