ANALYSIS OF THE 5800{\AA} SYSTEM OF CHROMYL CHLORIDE $(Cro_{2}Cl_{2})$ IN THE VAPOR PHASE
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Date
1979
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Ohio State University
Abstract
The electronic absorption spectrum of chromyl chloride vapor reveals substantial vibrational and rotational structure based on electronic $origin^{1}$ at 5800$\AA$. Five progressions are observed, each with a progression interval of 136$cm^{-1}$. Although a single vibronic level fluorescence study of the vapor at room $temperature^{2}$ and a fluorescence excitation spectrum of $CrO_{2}Cl_{2}$ cooled in a free jet $expansion^{3}$ have been published, the vibrational and rotational analyses of this system are incomplete. High resolution ($0.03 cm^{-1}$)room temperature absorption spectra of isotopically pure $CrO_{2}^{35}Cl_{2}$ have provided detailed rotational contours at high J of many members of each progression, permitting assignments of the vibronic symmetries of the bands. Isotopic splittings, determined from measurements of similar spectra of samples with a natural abundance of Cl isotopes, have also been obtained. From this information a more complete vibrational analysis of the system has been carried out.
Description
$^{1}$ T.M. Dunn and A.H. Francis, J. Mol. Spectrosc. 25, 86 (1968). $^{2}$ R. N. Dixon and C.R. Webster, J. Mol. Spectrosc. 62, 271 (1976). $^{3}$ J. A. Blazy and D. H. Levy, J. Chem. Phys. 69, 2901 (1978).
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