Vibrational spectra of 2-fluoropropene

Abstract Infrared spectra for 2-fluoropropene in the vapor state and in solution and the Raman spectrum of the solid were obtained. Normal coordinate calculations were made with a valence force field transferred from 2-chloropropene that included ten interaction constants. Only three interaction constants that involved the fluorine atom were needed, and a good fit between observed and calculated frequencies was obtained by adjusting only three interaction constants along with all but one diagonal force constants. The CC and CF stretching vibrations seem to be highly mixed, but there is not much mixing of other normal modes.