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 Title: HIGH RESOLUTION FAR-INFRARED SPECTROSCOPY OF TRANS- AND GAUCHE-BUTADIENE Author(s): Martin-Drumel, Marie-Aline Contributor(s): McCarthy, Michael C; Stanton, John F.; Billinghurst, Brant E.; Pirali, Olivier ; Georges, Robert ; Soulard, Pascale ; Asselin, Pierre ; Goubet, Manuel ; Nava, Matthew ; Changala, Bryan ; Baraban, Joshua H; Porterfield, Jessie P Subject(s): Conformers and isomers Abstract: Much attention has surrounded 1,3-butadiene because this conjugated diene, the simplest of all, is an ideal candidate to observe the effects of $\pi$-electron delocalization, and because the species is of central importance in a wide range of chemistry applications. Butadiene exists in two forms, the most stable planar \textit{trans} and the long-elusive \textit{gauche} lying 12 kJ/mol higher in energy. The later was only conclusively detected in the gas phase by some of us recently, in a work that allowed the determination of a partial structure from a combination of pure rotational measurements and high level quantum chemical calculations. In an attempt to detect the ro-vibrational spectrum of \textit{gauche}-butadiene, we have re-investigated the far-infrared spectrum of the species at both the SOLEIL synchrotron facility and the Canadian light source using three experimental set-ups allowing to reach rotational temperatures ranging from 30 to 350 K. We will present our results on new fundamentals of the \textit{trans} form, and on the \textit{gauche} form. Issue Date: 2019-06-18 Publisher: International Symposium on Molecular Spectroscopy Genre: Conference Paper / Presentation Type: Text Language: English URI: http://hdl.handle.net/2142/104287 DOI: 10.15278/isms.2019.TJ01 Rights Information: Copyright 2019 Marie-Aline Martin-Drumel Date Available in IDEALS: 2019-07-152020-01-25
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