Infrared intensities as a quantitative measure of intramolecular interactions—VIII: Alkyl vinyl ketones and alkyl phenyl ketones

Abstract

The conformations of phenyl and vinyl alkyl ketones are discussed. The populations and individual integrated vCC intensities are derived for s- cis and s- trans conformers of vinyl alkyl ketones and used to calculate total vCC intensities which are in good agreement with those observed. Carbonyl intensities are also correlated with twist angles and are shown to have a similar dependence on molecular structure in the vinyl and aryl series.