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Double-ionization energies of fluorinated benzene molecules
W J Griffiths1, M L Langford, F M Harris
1Mass Spectrometry Research Unit, University College of Swansea, Singleton Park, SA2 8PP, Swansea, UK.
Abstract:
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.
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