Abstract
Theoreticians are aware of the dangers inherent in the use of Koopmans' Theorem to equate calculated molecular orbital energies with observed ionisation potentials. Experimentalists, however, still use the theorem in the interpretation of results, particularly in photoelectron spectroscopy. This paper reviews the assumptions involved and indicates how calculations can be used safely.
Published Version
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More From: International Journal of Mass Spectrometry and Ion Physics
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