Anion solvation III. Infrared spectroscopic determination of solvent acceptor numbers and their use in understanding anion solvation

It is shown that the Gutmann acceptor number determined by NMR for a number of solvents correlates with vibration frequencies of these solvents. Vibration spectroscopy is applied to the determination of acceptor numbers to characterize the solvation of anions. The acceptor number obtained by this method characterizes the anion solvation in all its states of association with the cation.