Abstract
The differences of the chemical shifts measured in two different solvents of carbon tetrachloride and trifluoroacetic acid were determined and tubulated with various kinds of compounds. The solvent effect of trifluoroacetic acid represented by the above chemical shift differences were characteristic for each proton-type. This fact may be applicable to the qualitative analysis of the compounds. It is also tried to correlate this solvent effect with the basicity of the functional group neighboured by the proton concerned.
