Linear solvation energy relationships. Correlation and prediction of the distribution of organic solutes between water and immiscible organic solvents

Yizhak Marcus*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

141 Scopus citations

Abstract

Distribution data of monofunctional aliphatic and mono- and bifunctional aromatic solutes (species 2), having up to 10 carbon atoms, between water and 25 water-immiscible essentially dry solvents (species 1) have been correlated with properties of the solvents and solutes. The expression log Kwo = AvV2ΔδHI2 + Aααm2Δβ1 + Aββm2Δα1 yields essentially the same coefficients Av, Aα, and Aβ for all the solvents, including aliphatic and aromatic hydrocarbons, halogenated hydrocarbons, ethers, and esters. These expressions are rationalized in terms of the solute-solvent interactions that take place in the two liquid phases. The Aα and Aβ coefficients for the hydrogen-bonding terms are used to estimate the basicity and acidity of anions and cations on the same scale that is generally applicable to nonelectrolytic organic substances.

Original languageEnglish
Pages (from-to)8886-8891
Number of pages6
JournalJournal of Physical Chemistry
Volume95
Issue number22
DOIs
StatePublished - 1991

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