title: Characterisation of the water/o-nitrophenyl octyl ether system in terms of the partition of nonelectrolytes and of ions.
abstract: The Abraham linear free energy relationship, or solvation equation, has been applied to literature data on the partition of nonelectrolytes in the water to o-nitrophenyl octyl ether (NPOE) system. The resulting equation is compared to equations for other water to solvent systems using the D-parameter of Abraham and Martins and the theta-parameter of Ishihama and Asakawa. It is shown that as a solvent in partitioning systems, NPOE quite resembles nitrobenzene and 1,2-dichloroethane, and that the latter does not resemble an alkane-like solvent. Using descriptors for simple ions that we have previously obtained, we show that ions and nonelectrolytes can be included in the same linear free energy relationship.
authors.affiliation: Department of Chemistry, University College London, 20 Gordon Street, London, UK. m.h.abraham@ucl.ac.uk
authors.forename: Michael H
authors.initials: MH
authors.lastname: Abraham
authors.forename: Yuan H
authors.initials: YH
authors.lastname: Zhao