Torsional Spectrum of ^{12}CH_{3}^{13}CH_{3}: a 2-STATE Frequency Analysis of the Torsional Bands and the ν_{12} Vibrational Fundamental

Details Torsional Spectrum of ^{12}CH_{3}^{13}CH_{3}: a 2-STATE Frequency Analysis of the Torsional Bands and the ν_{12} Vibrational Fundamental Torsional Spectrum of ^{12}CH_{3}^{13}CH_{3}: a 2-STATE Frequency Analysis of the Torsional Bands and the ν_{12} Vibrational Fundamental

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009mss..conferg16b&link_type=abstract

"International Symposium On Molecular Spectroscopy, 64th Meeting, Held 22-26 June, 2009 at Ohio State University. http://molspec

Astronomy and Astrophysics

Astronomy

Astronomical Species And Processes

Scientific paper

The far-infrared spectrum of ^{12}CH_{3}^{13}CH_{3} is studied between 220-350 cm^{-1} at an effective resolution of 0.004-0.005 cm^{-1} using a Bruker IFS-120 HR . Observation of the torsional fundamental ν_{6} (289 cm^{-1}) and the torsional hot band 2ν_{6}-ν_{6} (255 cm^{-1}), together with the lowest frequency vibrational fundamental ν_{12} (821.5 cm^{-1}), also obtained with the same spectrometer at an effective resolution of 0.0025 cm^{-1}, gives information on the torsional stack of the ground vibrational state and that for v_{12}=1 state. The frequencies are analysed in terms of a 2-state fit to determine the torsion mediated Coriolis interactions between the torsional stacks. A comparison is made with a 2-state fit of similar data for ^{12}CH_{3}^{12}CH_{3}.

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