1 ABRAHAM MODEL CORRELATIONS FOR TRANSFER OF NEUTRAL MOLECULES AND IONS TO SULFOLANE Timothy W. Stephens a , Nohelli E. De La Rosa a , Mariam Saifullah a , Shulin Ye a , Vicky Chou a , Amanda N. Quay a , William E. Acree, Jr. a* and Michael H. Abraham b a Department of Chemistry, 1155 Union Circle # 305070, University of North Texas, Denton, TX 76203-5017 (U.S.A.) b Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ (U.K.) Abstract Data have been compiled from the published literature on the partition coefficients of solutes and vapors into anhydrous sulfolane. The logarithms of the water-to-sulfolane partition coefficients, log P, and gas-to-sulfolane partition coefficients, log K, were correlated with the Abraham solvation parameter model. The derived correlations described the observed log P and log K values for solutes dissolved in sulfolane to within average standard deviations of 0.14 log units or less. The log P correlation was extended to include the partition of ions by inclusion of a cation-solvent and an anion-solvent term. Key words and phrases Partition coefficients, sulfolane, nonelectrolyte solutes, ionic solutes, Abraham model correlations ________________________________________________________________________ *To whom correspondence should be addressed. (E-mail: acree@unt.edu)