VIBRATION-ROTATION ANALYSES OF THE 4540\AA BAND SYSTEM OF GLYOXAL-$d_{2}$.

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Abstract

As part of a continuing $program^{1,2}$ of analysis of bands of the $^{1}A_{u}-{^{1}}A_{g} (\pi^{\ast} - n)$ transition of glyoxal, the rotational structure of a number of bands of the doubly deuterated derivative $(C_{2}D_{2}O_{2})$ have been analysed. Rotational and vibrational constants have been determined using an asymmetric rotor computer program. The vibrations investigated are $\nu_{2}{^{\prime}}$ (CO stretching), $nu_{4}{^{\prime}}$ (CC stretching), $nu_{5}{^{\prime\prime}}$ and $\nu_{5}{^{\prime}}$ (CCO bending), the torsional levels with $\nu_{7}{^{\prime}} = 1-3$, and $\nu_{8}{^{\prime}}$ and $\nu_{8}{^{\prime}}$ (CD out-of-plane wagging).

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$^{1}$ J. Paldus and D. A. Ramsay, Can, J. Phys. 45, 1389 (1967). $^{2}$ F. W. Birss, J. M. Brown, A. R. H. Cole, A. Lofthus, S. L. N. G. Krishnamachari, G. A. Obsorne, J. Paldus, D. A. Ramsay and L. Watmann, Can. J. Phys., in press.
Author Institution: Division of Pure Physics, National Research Council of Canada

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