The Millimeter-wave Spectrum Of Vinyl Acetate

Kolesniková, Lucie

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https://hdl.handle.net/2142/50893 Copy

Description

Title

The Millimeter-wave Spectrum Of Vinyl Acetate

Author(s)

Kolesniková, Lucie

Contributor(s)

• Kleiner, Isabelle
• Cernicharo, Jose
• Alonso, José L.
• Peña, Isabel

Issue Date

2014-06-19

Keyword(s)

Large amplitude motions, internal rotation

Abstract

Recent discovery of methyl acetate in Orion KL\footnote{B.~Tercero, I.~Kleiner, J.~Cernicharo, H.~V.~L. Nguyen, A.~L\'{o}pez, and G.~M.~Mu\~{n}oz Caro, \textit{Astrophys. J. Lett.} \textbf{2013}, \textit{770}, 13.} places the vinyl acetate as a potential candidate possibly present in the interstellar medium. The room-temperature rotational spectrum of vinyl acetate has been measured from 125 up to 360~GHz to provide direct frequencies to the astronomical community. Transition lines, corresponding to the most stable conformer, have been observed and assigned on the basis of the previously determined spectroscopic constants.\footnote{B.~Velino, A.~Maris, S.~Melandri, W.~Caminati, \textit{J. Mol. Specrosc.} \textbf{2009}, \textit{256}, 228.} All the rotational transitions reveal the $A-E$ splitting due to the methyl internal rotation and the precise set of the spectroscopic constants obtained from the least-squares fit to a threefold barrier internal rotation Hamiltonian is reported. Additional measurements have been also made using a broadband CP-FTMW spectrometer in the region of $6–18$~GHz which made possible to assign all monosubstituted $^{13}$C and $^{18}$O isotopic species in natural abundance and to derive the molecular structure.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

Permalink

http://hdl.handle.net/2142/50893

DOI

https://doi.org/10.15278/isms.2014.RJ05

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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