Perfluorinated Solvents as Nonpolar Test Systems for Generalized Models of Solvatochromic Measures of Solvent Strength

James E. Brady, Peter W Carr

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

The π* values of perfluorodlmethyldecalln, perfluorotrlbutylamlne, perfluoroheptane, and perfluorooctane have been found to be -0,33, -0.36, -0.39, and -0.41, respectively. These values Indicate that solvent polarizability provides a major contribution to the π* scale of solvent dlpolarlty/polarizability. A three-parameter equation Is shown to provide reasonable correlation for 76 solvents of solvent π* values for a variety of solvent types Including polychlorinated and aromatic solvents which are conventionally excluded from the so-called select solvent set. The utility of perfluorinated solvents as liquid-liquid extraction reference phase Is assessed and shown to be strongly dependent upon the Indicator solute being studied.

Original languageEnglish (US)
Pages (from-to)1751-1757
Number of pages7
JournalAnalytical Chemistry
Volume54
Issue number11
DOIs
StatePublished - Sep 1982

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