
%0 Journal Article
%A Rae, ID 
%T Aromatic amides. X. Anisotropic shielding by protonated amide and thioamide groups
%J Australian Journal of Chemistry
%D 1974/12/01
%V 27
%N 12
%P 2621-2625
%K 
%R https://doi.org/10.1071/CH9742621
%U https://www.publish.csiro.au/paper/CH9742621 
%X N.m.r. spectra have been recorded for solutions of N-aryl amides and thioamides in trifluoroacetic acid. Anisotropic deshielding by >C=O and >C=S is sharply reduced when these groups become protonated and in a number of cases upfield shifts are recorded for nearby protons. 
