Pure Rotational Spectroscopy Of Vinyl Mercaptan

Martin-Drumel, Marie-Aline

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https://hdl.handle.net/2142/50962 Copy

Description

Title

Pure Rotational Spectroscopy Of Vinyl Mercaptan

Author(s)

Martin-Drumel, Marie-Aline

Contributor(s)

• Schlemmer, Stephan
• Lewen, Frank
• Müller, Holger S.P.
• Thorwirth, Sven
• Zingsheim, Oliver

Issue Date

2014-06-16

Keyword(s)

Small molecules

Abstract

Vinyl mercaptan (ethenethiol, CH$_2$$=$CHSH) exists in the gas phase in two distinct rotameric forms, \textit{syn} (planar) and \textit{anti} (quasi-planar in the ground vibrational state). The microwave spectra of these two isomers were investigated previously\footnote{M. Tanimoto et al. \textit{J. Mol. Spectrosc.} 78, 95--105 \& 106--119 (1979)} however not exceeding frequencies of about 65 GHz. In the present investigation, the pure rotational spectra of both species have been investigated at millimeter wavelengths. Vinyl mercaptan was produced in a radiofrequency discharge through a constant flow of ethanedithiol at low pressure. Both \textit{syn} and \textit{anti} rotamers were observed and new extensive sets of molecular parameters were obtained. Owing to its close structural relationship to vinyl alcohol and the astronomical abundance of complex sulfur-bearing molecules, vinyl mercaptan is a plausible candidate for future radio astronomical searches.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

Permalink

http://hdl.handle.net/2142/50962

DOI

https://doi.org/10.15278/isms.2014.MG15

Copyright and License Information

Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/

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