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Title:submillimeter wave spectroscopy of acetyl isocyanate : CH3C(O)NCO
Author(s):Margulès, L.
Contributor(s):Ilyushin, V.; Kleiner, Isabelle; Jabri, Atef; Cernicharo, Jose; Tercero, Belén; Guillemin, J.-C.; Motiyenko, R.A.
Subject(s):Mini-symposium: Astronomical Molecular Spectroscopy in the Age of ALMA
Abstract:Except isocyanic acid detected in the ISM since 1972\footnote{Snyder, L. E.; and Buhl, D.{\em Astrophys. J.} ~{\bf177}, (1972) 619}, the organo isocyanate derivatives are poorly studied in the millimeter wave domain. This lack of data could be the reason of their non detection in the ISM up to now. We decided to investigate the \chem{C_3H_3NO_2} isomer: acetyl isocyanate. Previously measured up to 40 GHz \footnote{Landsberg, B.M.; and Iqbal, K.{\em J.C.S. Faraday II}~{\bf76}, (1980) 1208}, the cis-conformer exhibits internal rotation motion with a medium barrier value of 360 \wn. The trans conformer conformer is calculated to have an energy of 12.55 kJ.mol$^{-1}$ (1060 \wn) higher than the cis one\footnote{Uchida, Y.; Toyoda, M.; Kuze, N.; and Sakaizumi, T.{\em J. Mol. Spectrosc.}~{\bf256}, (2009) 163} and is not studied here. The measurements were performed in Lille with our solid state devices spectrometer up to 500 GHz. The sample was found to have a poor stability and reacts fastly with metal parts. We should repeat measurements using a flow and a pyrex cell in order to have satisfactory signal to noise ratio. The analysis was performed with RAM36 code\footnote{Ilyushin, V.V. et al;{\em J. Mol. Spectrosc.}~{\bf259}, (2010) 26} which used the Rho Axis Method. The first results and its searche in ORION will be presented.\\ \em{This work was supported by the CNES and the Action sur Projets de l'INSU, PCMI. This work was also done under Ukrainian-French CNRS-PICS 6051 project and ANR-13-BS05-0008-02 IMOLABS}
Issue Date:2014-06-18
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:Margulès, L.; Ilyushin, V.; Kleiner, I.; Jabri, A.; Cernicharo, J.; Tercero, B.; Guillemin, J.; Motiyenko, R.A. SUBMILLIMETER WAVE SPECTROSCOPY OF ACETYL ISOCYANATE : CH3C(O)NCO. Proceedings of the International Symposium on Molecular Spectroscopy, Urbana, IL, June 16-21, 2014. DOI: 10.15278/isms.2014.WF10
Rights Information:Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License.
Date Available in IDEALS:2014-09-17

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