15min:

MIN-CHIEH YANG, J. M. WILLIAMSON AND TERRY A. MILLER, Laser Spectroscopy Facility, Department of Chemistry, The Ohio State University, Columbus, OH 43210.

The high resolution, rotationally resolved laser induced fluorescence spectra for the \widetildeA ²A₁ \leftrightarrow \widetildeX ²E transition of CF₃O and CF₃S were recorded. The \widetildeA electronic state symmetric vibrational bands 0₀⁰ and 3₀¹ and the asymmetric bands 5₀¹ and 6₀¹ were analyzed for CF₃O, while for CF₃S the symmetric bands 0₀⁰, 1₀¹, 2₀¹ and 3₀¹, as well as the asymmetric bands 6₀¹, 3 ₀¹5₀¹, and 3₀¹6₀¹ were analyzed. The results of the analysis show that the ground states of both CF₃O and CF₃S have C_3v symmetry which is consistent with a dynamic Jahn-Teller effect in these radicals. In the asymmetric 5₀¹ band of CF₃O, both perpendicular and parallel type transitions were observed while for the other asymmetric bands, only perpendicular type transitions were observed. The molecular parameters and the details of the analysis of all these bands will be presented.