Nuclear Magnetic Resonance Studies. VIII. Solvent Effect of Trifluoroacetic Acid on Proton Magnetic Resonance of Substituted Benzene Derivatives

Abstract

The nuclear magnetic resonance spectra of a number of substituted benzenes were measured in carbon tetrachloride and in trifluoroacetic acid and the substituent effect of each substituent was estimated in both media. The results were discussed in connection of the π-electron densities on the ring carbon atoms.