PYROLYSIS JET SPECTROSCOPY OF THE $S_{1}$ AND $T_{1}$ STATES OF THIOFORMALDEHYDE
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Date
1989
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
Emission excitation spectra of the $A-x$ and $A-x$ and systems of $H_{2}CS$ have been recorded at high resolution with jet cooling. Mononeric thiofornaldehyde was generated by pyrolysis in the throst of a continuous free jet1, yielding intense fluorescence and phosphorescence excitation spectre with rotational temperatures of 5-10 K. The spectra have been rotationally analyzed to obtain accurate band origins and rotational constants for a substantial number of upper state levels. In the triplet state, the major spin constants were determinable because transitions to the $F_{1}, F_{2}$, and $F_{3}$ components are observed. Extensive perturbations are observed in the spectra due to the near-degeneracy of $\nu_5$ and $\nu_{3}$.
Description
$^{1}$ J. R. Dunlop, J. Karolczak and D. J. Clouthier. Ches. Phys. Lett. 151. 362 (1988).
Author Institution: Department of Chemistry, University of Kentucky; Quantum Electronics Laboratory, Institute of Physics., A. Micklewicz University
Author Institution: Department of Chemistry, University of Kentucky; Quantum Electronics Laboratory, Institute of Physics., A. Micklewicz University