C 13 SPLITTINGS IN SOME SUBSTITUTED BENZENES
1962; NRC Research Press; Volume: 40; Issue: 9 Linguagem: Inglês
10.1139/v62-269
ISSN1480-3291
AutoresH. M. Hutton, W. F. Reynolds, Ted Schaefer,
Tópico(s)Molecular Spectroscopy and Structure
ResumoC 13 sidebands in the proton spectra of some symmetrically substituted benzenes have been used to obtain carbon–hydrogen coupling constants as well as proton coupling constants.A long-range carbon–hydrogen coupling constant has also been found. Substituents which act as electron acceptors in an inductive manner are found to increase the C 13 H coupling constants by as much as 20 c.p.s. The patterns of the sidebands are discussed and possible errors in first-order analyses are indicated.
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