The Photoelectron Spectrum of Sulphur Trioxide: Jahn-Teller Distortion in SO3+

Details The Photoelectron Spectrum of Sulphur Trioxide: Jahn-Teller Distortion in SO3+ The Photoelectron Spectrum of Sulphur Trioxide: Jahn-Teller Distortion in SO3+

Feb 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974rspsa.336..355m&link_type=abstract

Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences, Volume 336, Issue 1606, pp. 355-364

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Scientific paper

The photoelectron spectrum of sulphur trioxide has been recorded and extensive fine structure resolved. In three bands of the spectrum there is evidence for Jahn-Teller distortion. This has been interpreted quantitatively using the model of Longuet-Higgins, Opik, Pryce & Sack (1958). It also provides definite evidence that the three bands correspond to degenerate electronic states of SO3+. Four ionization potentials were found with values 12.8, 13.8, 14.9 and 17.9 eV. In two cases approximate changes in the S-O bond length have been calculated from the experimental data. The order of the first three electronic states of SO3+ is unexpected, the ground state being degenerate. This result is compared with other data from photoelectron, ultraviolet and electron spin resonance spectra of isoelectronic species.

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