Abstract
The first 33S NMR relaxation study of an organic ion in aqueous and nonaqueous electrolyte solution is reported. The 33S NMR spectra were determined as a function of benzenesulfonic acid concentration in water, formamide, N-methylformamide, and a binary mixture of formamide plus 18 mol% water. Linear regression analysis was used to estimate relaxation times at infinite dilution. The 33S relaxation data are discussed in terms of ion-ion and ion-solvent interactions. The data indicate that solvation of benzenesulfonate in water and formamide is very similar, while solvation in N-methylformamide is different.
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