The submillimeter-wave spectrum of the HCCO radical
- 15 April 1987
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 86 (8) , 4319-4326
- https://doi.org/10.1063/1.451892
Abstract
The pure rotational spectra of the HCCO and DCCO radicals were observed for the first time in the submillimeter‐wave region. The HCCO radical was generated by either the C2H2+O reaction or the H2CCO+F reaction. The former was found to be about twice as efficient as the latter, and was employed for obtaining DCCO using C2D2 as a precursor. The observed spectra were fitted to the pattern of a near prolate symmetric top with a large A rotational constant. The observed spin‐rotation splittings result in an extremely large εaa constant and exhibit an anomalous K dependence, indicating that there is a low‐lying excited electronic state which interacts with the ground state.Keywords
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