Knowledge Bank

The high resolution, rotationally resolved laser induced fluorescence spectra for the $A~2A1\leftrightarrow X~2E$ transition of $CF3O$ and $CF3S$ were recorded. The $A~$ electronic state symmetric vibrational bands $000$ and $301$ and the symmetric 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 $601,301501$, and $301601$ were analyzed. The results of the analysis show that the ground states of both $CF3O$ and $CF3S$ have $C3v$ symmetry which is consistent with a dynamic Jahn-Teller effect in these radicals. In the asyymetric $501$ 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.