Development of a generalized model for the π* scale of solvent polarity

James E. Brady, Peter W. Carr

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


The Kamlet-Taft π* scale of solvent dipolarity/polarizability is examined with a model that combines the classical Onsager reaction field and the dielectrically saturable Block and Walker reaction field. The model presented is found to adequately correlate the π* values of a wide range of solvent classes (perfluoro, polychlorinated, aromatic, and dipolar aprotic); however, systematic deviations are observed for polychlorinated solvents. Comparison of results obtained for 76 aprotic low-molecular-weight solvents with the results for a series of methyl/phenylsiloxane polymer solvents supports the general approach outlined.

Original languageEnglish (US)
Pages (from-to)3053-3057
Number of pages5
JournalJournal of physical chemistry
Issue number16
StatePublished - 1982

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