DOUBLE-IONIZATION OF FLUOROBENZENE TO SINGLET AND TRIPLET-STATES OF ITS DICATION

Double-ionization energies of the fluorobenzene molecule to singlet an d triplet electronic states of its dication have been measured using d ouble-charge-transfer spectroscopy. The values obtained are compared w ith those calculated using a semi-empirical form of the multiple-scatt ering X alpha computational method. The calculated data show that the density of electronic states of C6H5F2+ increases markedly as the ener gy increases. However, the first six measured energies to tripler stat es, and the first five to singlet states, closely match the energies o f predicted electronic transitions, thereby verifying the association of these measured energies with double ionization to specific states o f C6H5F2+.