Double-ionization energies of fluorinated benzene molecules.
Results are reported of an experimental determination by double-charge transfer spectroscopy of the previously unknown double-ionization energies of the fluorinated benzene molecules C6H5F, l,2-C6H4F2, 1,3-C6H4F2, 1,4-C6H4F2, 1,2,3-C6H3F3, 1,2,4-C6H3F3, 1,3,5-C6H3F3, 1,2,3,4-C6H2F4, 1,2,3,5-C6H2F4, 1,2,4,5-C6H2F4, and C6HF5. The data are remarkably similar; the lowest double-ionization energies for all the molecules are within ±0.5 of 25.7 eV, and the data for higher energies suggest that the distributions of electronic state energies for the dications of the molecules show only small variations.
Mass Spectrometry Research Unit, University College of Swansea, Singleton Park, SA2 8PP, Swansea, UK.
W J
WJ
Griffiths
M L
ML
Langford
F M
FM
Harris