Vibration-torsion-rotation interactions in molecules with a C3v top and Cs frame: vt=3,4 torsional and C–S stretching vibrational states of methyl mercaptan CH3SH

Ilyushin, V.

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https://hdl.handle.net/2142/104224 Copy

Description

Title

Vibration-torsion-rotation interactions in molecules with a C3v top and Cs frame: vt=3,4 torsional and C–S stretching vibrational states of methyl mercaptan CH3SH

Author(s)

Ilyushin, V.

Contributor(s)

• Bekhtereva, Elena
• Sydow, Christian
• Maul, Christof
• Bauerecker, Sigurd
• Schlemmer, Stephan
• Lewen, Frank
• Müller, Holger S.P.
• Zakharenko, Olena
• Bakhmat, Yan
• Alekseev, E.A.

Issue Date

2019-06-17

Keyword(s)

• Large amplitude motions
• Internal rotation

Abstract

"We present\footnote{This work was done under support of the Volkswagen foundation. The assistance of Science and Technology Center in Ukraine is acknowledged (STCU partner project P686). The work in K{\""o}ln was supported by the Deutsche Forschungsgemeinschaft (DFG) via SFB~956, project B3, and the Ger{\""a}tezentrum Cologne Terahertz Center.} the results of our analysis of the FIR and microwave spectra of the \nub{8} vibrational state (C-S stretch) of methyl mercaptan \chem{CH_3SH} near 710 \wn. The analysis employs a new program which was recently developed for fitting several isolated small-amplitude fundamentals embedded in a pure torsional bath in molecules like methyl mercaptan, in which the frame has C$_{s}$ symmetry and the methyl top has C$_{3v}$ symmetry. Our study involves the energy levels that belong to the \nub{8} vibrational state itself as well as to v$_t$ = 0, 1, 2, 3, 4 torsional vibrational states of methyl mercaptan. In our analysis we used data available in the literature [1,2,3] as well as the results of the new measurements from Kharkiv, K{\""o}ln, and Braunschweig. In the talk the details of this new study will be discussed. [1] L.-H. Xu, R. M. Lees, G. T. Crabbe, et al., J. Chem. Phys. 137, 104313 (2012). [2] R.M. Lees, Li-Hong Xu, B.E. Billinghurst, J. Mol. Spectrosc. 352, 30-38 (2016). [3] R.M. Lees, Li-Hong Xu, B.E. Billinghurst, J. Mol. Spectrosc. 319, 45-56 (2018)."

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/104224

DOI

https://doi.org/10.15278/isms.2019.MI04

Copyright and License Information

Copyright 2019 V. Ilyushin

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