1 H, 13 C, and 14 N nuclear magnetic resonance study of the hydrogen chloride–NN-dimethylacetamide and hydrogen chloride–N-methylacetamide systems in deuteriochloroform solution

Protonation shifts and 13C T1 values in the title systems are reported. Evidence is found for predominant O-protonation and for enhanced intermolecular association in the protonated forms of the amides.