Tetrahedron p. 1263 - 1272 (1989)
Update date:2022-08-24
Topics:
Glass, Richard S.
Broeker, Jeffrey L.
Jatcko, Mark E.
He I and He II photoelectron spectra of methylthiomethylbenzene (2), 2-(1-methylethylthio)ethylbenzene (3), 1-naphthalenemethanethiol (4), 1,1-dimethylethylthiobenzene (5), benzenethiol (6), and methylthiobenzene (7) are reported.Comparison of the He I and He II band areas for each compound provide a reliable basis for assigning the bands as due to photoionization from a carbon ?-molecular orbital, sulfur p-type lone pair orbital, or mixed orbital.Ionization from a molecular orbital localized on sulfur results in a large decrease in intensity using He II compared with He I as the source relative to ionization from carbon ?-molecular orbitals.Mixed orbitals with both sulfur and carbon character also give rise to diminished intensities in the He II versus He I spectra relative to pure carbon orbitals, but proportionately less decrease than pure sulfur orbitals.
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