Ionization and Dissociation of Hexafluorobenzene by Electron Impact

Mass spectra and appearance potentials are presented for the principal positive and negative ions of hexafluorobenzene along with comparative data for benzene. Although complete analysis of bond dissociation energies is prevented by lack of thermochemical data, the C–F bond is estimated to be 145 kcal. Qualitatively, the results indicate that C6F6 is thermally more stable than C6H6 and is a relatively stable configuration in the presence of ionizing radiation.