DOI: 10.1039/A905776E
(Paper)
Reference Section for: Phys. Chem. Chem. Phys., 1999, 1, 4785-4790
Solvent-induced frequency shifts in the infrared spectrum of acetone in organic solvents
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Do Kun Cha, Alla A. Kloss, Alex C. Tikanen and W. Ronald Fawcett
Abstract
The solvent induced frequency shifts observed in the infrared spectrum of acetone as a dilute solute are reported for 23 organic solvents, both polar and non-polar. Both the C2O stretching frequency and the asymmetric stretch of the molecular skeleton show strong correlations with the acceptor number of the solvent, a measure of its Lewis acidity. A detailed study of the absorption in the 1715 cm-1 region for acetone–carbon tetrachloride and acetone–nitrobenzene mixtures reveals the presence of three bands, one due to the acetone monomer and two due to dimers. These data are analyzed to obtain estimates of the dimerization equilibrium constant.
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