The UV and VUV Absorption and Reflection Spectrum of Toluene PDF

Keywords

benzene, toluene, spectra

Abstract

Low temperature absorption spectra of toluene in rare gas matrices, and its absorption and reflection spectraa in pure solid phase were obtained at temperature near liquid helium temperature, in the wavelength region 270-170 nm. Absolute intensity measurements in terms of the molar absorption coefficient values were made, and methyl shift in the three electronic transitions was compared with the Petrushka calculations. In the 210 and 190 nm transitions, the absorption spectrum of toluene in the Xe matrix shows a splitting of the 0-0 line. An explanation is given, that Xe matrix may offer sufficient perturbation to remove the degeneracy of the 1B2 and 1A1 states which are of 1E10 parentage in the benzene molecule