The Laboratory Millimeter- and Submillimeter-Wave Spectrum of the First Two Excited Torsional States of 13CH 3OH
Abstract
The rotational-torsional spectrum of (C-13)H3OH is presented in both the symmetric and degenerate substates of the first two excited torsional states. Of the new transitions reported, 122 lines are from the v(t) = 1 torsional state and 110 lines are from the v(t) = 2 torsional state, and all are confined to the rotational quantum number J = 8 or less. The data are combined with previously reported millimeter and submillimeter data for the v(t) = 0 torsional state and 44 previously measured excited torsional state lines to form a global data set of 596 transitions, which is analyzed and fitted using an extended internal axis method. The fit results in an overall rms deviation of 1.98 MHz. The spectral constants generated by the fit are used to predict an additional 123 lines of (C-13)H3OH in the v(t) = 1,2 excited torsional states with frequencies up to 612 GHz and rotational quantum number J = 11 or less.
- Publication:
-
The Astrophysical Journal Supplement Series
- Pub Date:
- December 1988
- DOI:
- 10.1086/191305
- Bibcode:
- 1988ApJS...68..821A
- Keywords:
-
- Carbon Isotopes;
- Interstellar Matter;
- Methyl Alcohol;
- Millimeter Waves;
- Molecular Spectra;
- Submillimeter Waves;
- Line Spectra;
- Molecular Excitation;
- Quantum Numbers;
- Radio Astronomy;
- Rotational Spectra;
- Astrophysics;
- INTERSTELLAR: MOLECULES;
- LABORATORY SPECTRA;
- LINE IDENTIFICATIONS;
- MOLECULAR PROCESSES