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Title:High-resolution Far Infrared Spectroscopy And Analyses Of Trioxane
Author(s):Richard, Cyril
Contributor(s):Asselin, Pierre; Pirali, Olivier; Boudon, Vincent
Subject(s):Small molecules
Abstract:\begin{wrapfigure}{r}{0pt} \includegraphics[scale=0.2]{Trioxane.eps} \end{wrapfigure} Trioxane, (H$_2$CO)$_3$, is a symmetric top that belongs to the $C_{3v}$ symmetry group. The molecule owns 20 fundamental modes that are dispatched as 7 symmetric vibrations of type A1, 3 vibrations of type A2 and 10 doubly degenerate vibrations of type $E$. Infrared spectra of trioxane have been recorded in the 50--650 cm$^{-1}$ range using a high resolution Bruker IFS 125 interferometer located at the AILES beamline of the SOLEIL synchrotron facility. Owing to its higher brilliance in the far-infrared region, the SOLEIL synchrotron radiation was used to improve the signal-to-noise ratio of the spectrum at the maximal resolution of 0.001 cm$^{-1}$. We present here a detailed analysis and modeling of intense OCO deformation $\nu_7$ and $\nu_{19}$ modes as well as weaker CH$_2$ torsion $\nu_{20}$ mode and its first overtone 2$\nu_{20}$. Thanks to the formalism and programs developed in Dijon, we could determine accurately the effective Hamiltonian parameters for these 3 modes.
Issue Date:2021-06-25
Publisher:International Symposium on Molecular Spectroscopy
Genre:Conference Paper / Presentation
Type:Text
Language:English
URI:http://hdl.handle.net/2142/111584
Date Available in IDEALS:2021-09-24


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