The νC=O frequency for ethylene carbonate is in Fermi resonance with the first overtone of the skeletal breathing mode, and the extent of Fermi interaction is affected by solvent/solvent interaction. The νC=O frequencies have been corrected for Fermi resonance, and the corrected νC=O frequencies have been correlated with the mole % CHCl<sub>3</sub>/CCl<sub>4</sub>, (CH<sub>3</sub>)<sub>2</sub>SO/CCl<sub>4</sub> (CH<sub>3</sub>)<sub>2</sub>SO/CHCl<sub>3</sub>, and CHCl<sub>3</sub>/<i>n</i>-C<sub>6</sub>H<sub>14</sub>, the solvent reaction field, and νC=O for acetone recorded in the same solvents. Solute/solvent interactions are discussed. The acceptor number of the solvent vs. the νC=O frequencies apparently correlates in a different manner for the solvents which form intermolecular hydrogen bonds with the solute. Steric factors are suggested as being one of the reasons that the AN values and νC=O frequencies do not give nonambiguous correlations. The νC=O mode for ethylene carbonate shifts continuously to lower frequency as the mole % CHCl<sub>3</sub> or (CH<sub>3</sub>)<sub>2</sub>SO increases in each of the solvent mixtures studied.

PDF Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription