AMIDE AND THIOAMIDE BANDS OF BENZANILIDE AND THIOBENZANILIDE IN THE VIBRATIONAL SPECTRA

Article abstract of DOI:10.1016/0022-2860(84)80117-9

It has been widely accepted that in secondary amides and secondary thioamides, in the spectral region between 1600 and 1200 cm^-1 two characteristic bands could be recognized (Amide II and Amide III for amides and B and C bands for thioamides).Our spectra of benzanilide, C6H5(C=O)NHC6H5, and thiobenzanilide, C6H5(C=S)NHC6H5, show that in this region there are, at least, four prominent bands which shift on deuteration.That could indicate that all these bands are in connection with the vibrations of amide and/or thioamide groups.Some other amide and thioamide bands have been also discussed.