10min:
THE X leftarrow à SEP SPECTRA OF JET-COOLED THIOPHOSGENE.

PRAVEEN D. CHOWDARY, BRENT STRICKLER, SANDRA LEE AND MARTIN GRUEBELE, Department of Chemistry, University of Illinois, Urbana, IL 61801.

\noindent The X leftarrow à stimulated emission pumping of SCCl2 made over 100 new vibrational transitions accessible from 7000 -- 8000 cm-1 above the X state zero point energy. We report anharmonic constants that fit all the 482 currently assigned vibrational energy levels. A spectral autocorrelation analysis shows that the onset of free energy flow has not been reached at 8000 cm-1, in accordance with higher energy B state SEP data and a theoretical analysis. The available experimental data and computational results are both compatible with less fragmentation among the observable interior states of SCCl2.