Molecular Interactions: I. Infrared Spectra of Some Carboxylic Acids in Carbon Tetrachloride and Benzene Solutions

Infrared spectra of benzoic, o-chlorobenzoic, and salicylic acids in the range 700 to 3800 cm−1 have been studied. Measurements have been made on the three acids in carbon tetrachloride and benzene solutions, at a number of concentrations in each case. The results are interpreted in terms of the molecular species present in each solution and the effect of the solvents on these species. Assignments have been made of the observed bands to the various vibrational modes characteristic of the COOH group.