The IR spectra of thione and thiol tautomers of 2-quinolinethione isolated in Ar and N2 low-temperature matrices are reported. The UV-induced photochemical reaction, transforming the initially abundant thione form into the thiol form, was used for separation of the spectra of the two tautomers. The ratio of the tautomers before UV irradiation of the sample was estimated as [thione]/[thiol] = 7:1. The experimental spectra of 2(1 H)-quinolinethione and 2-quinolinethiol were interpreted by comparison with the spectra calculated theoretically at the ab initio SCF/6-31 G** level.
|Original language||English (US)|
|Number of pages||18|
|Journal||Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy|
|State||Published - Oct 1995|
ASJC Scopus subject areas
- Analytical Chemistry
- Atomic and Molecular Physics, and Optics