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Hyperfine Interaction Constants of the HCCS and DCCS Radicals Studied by Fourier Transform Millimeter-Wave Spectroscopy

✍ Scribed by Eunsook Kim; Hideta Habara; Satoshi Yamamoto

Publisher: Elsevier Science
Year: 2002
Tongue: English
Weight: 236 KB
Volume: 212
Category: Article
ISSN: 0022-2852
DOI: 10.1006/jmsp.2002.8516

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✦ Synopsis

The rotational spectral lines of HCCS and DCCS have been observed with a Fourier transform millimeter-wave spectrometer in combination with a pulsed discharge nozzle. The HCCS radical is produced by discharging a mixture of C 2 H 2 and CS 2 diluted in Ar. The DCCS radical is produced by using C 2 D 2 instead of C 2 H 2 . The spectral lines of HCCS and DCCS in both the 2 3/2 and 2 1/2 states are measured in the frequency range from 16 to 48 GHz, and the molecular constants are determined accurately from a joint least-squares analysis with the reported millimeter-and submillimeter-wave data. The hyperfine interaction constants of the hydrogen and deuterium nuclei are determined for the first time, and are discussed in relation to the Renner-Teller effect on this molecule.

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