Abstract
The N.M.R. spectra of compounds containing various types of C-methyl groups are discussed with special reference to the effects of spin coupling. Particular attention is given to compounds containing the CHCH3 group in saturated systems. It is pointed out that the observed splitting of the methyl band is not always equal to the coupling constant between the methyl protons and the adjacent proton, even when the chemical shift between the two groups of protons is large.
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