VIBRATIONAL AND ROTATIONAL ANALYSIS OF THE SINGLET-TRIPLET SPECTRUM OF PROPYNAL
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Date
1962
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Ohio State University
Abstract
The 4143 {\AA} system of propynal $HC \equiv CCHO$ is assigned to a $^{2}A^{\prime \prime}-{^{1}}A^{\prime}$ transition of $\pi^{\ast}\leftarrow n$ type. The emission spectrum, obtained under low resolution from an electrodeless discharge in the flowing vapour, confirms the vibrational analysis of the ground $state.^{1,2}$ The vibrational analysis of the absorption spectrum closely follows that for the corresponding $^{1}A^{\prime \prime}-{^{1}}A^{\prime} transition.^{3}$ A rotational analysis of the origin band enables the excited state geometry to be tentatively determined.
Description
$^{1}$ G. W. King and D. Moule, Spec. Acta. 17, 286 (1961). $^{2}$ J. C. D. Brand and J. K. G. Watson, Trans. Farad. Soc. 56, 1582 (1960). $^{3}$ J. C. D. Brand, J. H. Callomon and J. K. G. Watson, Can. J. Phys. 39, 1508 (1961).
Author Institution: Department of Chemistry, McMaster University
Author Institution: Department of Chemistry, McMaster University