Vibronic analysis and symmetry of the lowest energy ultraviolet transition of thiophen
- 1 January 1982
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 2
- No. 7,p. 761-765
- https://doi.org/10.1039/p29820000761
Abstract
High resolution and temperature dependence measurements have been recorded for the lowest energy u.v transition of thiophen. Based on the new observations of the hot bands the vibronic fine structure has been reassigned. The new assignment can be fitted well to the spectra of deuteriated derivatives. The first band system of the u.v. spectrum is assigned to the ψ4â†�ψ3(B2) transition. This conclusion is supported by a comparison of the ionization potentials and transition energies of some five-membered heterocycles.Keywords
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