The submillimeter-wave spectrum of propionitrile (C2H5CN)

Details The submillimeter-wave spectrum of propionitrile (C2H5CN) The submillimeter-wave spectrum of propionitrile (C2H5CN)

Aug 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apjs...93..589p&link_type=abstract

The Astrophysical Journal: Supplement Series (ISSN 0067-0049), vol. 93, no. 2, p. 589-610

Astronomy and Astrophysics

Astrophysics

15

Absorption Spectra, Interstellar Matter, Nitriles, Orion Nebula, Star Formation, Submillimeter Waves, Angular Momentum, Astronomical Spectroscopy, Coriolis Effect, Dipole Moments, Rotational Spectra

Scientific paper

The laboratory millimeter-wave and submillimeter-wave rotational spectrum of propionitrile (ethyl cyanide, C2H5CN) in its ground vibrational state has been extended through J = 70 and Ka = 36. Transitions measured in this study are in the frequency range 250-610 GHz. A fit of 952 transitions including 732 new measurements to a Watson A-reduced Hamiltonian has yielded a complete set of quartic and sextic distortion constants, in addition to six optic distortion constants. Internal rotation and hyperfine splittings have not been resolved, so they are not included in the analysis. Predicted transition frequencies for a large number of additional transitions of interest to radioastronomers are provided.

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