THE MICROWAVE SPECTRUM OF THE VINOXY RADICAL, $CH_{2}CHO$
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Date
1984
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Ohio State University
Abstract
Although the vinoxy radical has recently attracted much attention in chmical kinetics its spectroscopic data have been quite limited so that even its planarity has not been confirmed. The pure rotational spectrum of the vinoxy radical was observed for the first time in the mm-wave region using the reactions of either $C_{2}H_{4}+(O_{2})_{MW disch}$. and $CH^{3}CHO+(CF_{4})_{MW disch}$., the latter reaction gaving 4-5 times stronger signal. The determined rotational constants result in a small inertial defect, supporting its planar structure. The spinrotation interaction constants were found to be quite small, and are compatible with the fact that the resonance form $CH_{2}-CH=O$, is more important than $CH_{2}=CH-O$ in the ground electronic state, as have been predicted by ab initio $calculations^{1,2}$.
Description
$^{1}$. M. Dupuis et al., J. Chem. Phys. 76, 488 (1982). $^{2}$. E.S. Huyser et al., J. Am. Chem. Soc. 104, 2956 (1982).
Author Institution: Institute for Molecular Science, Okazaki 444
Author Institution: Institute for Molecular Science, Okazaki 444