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Spectral Assignments And Analysis Of The Ground State Of Nitromethane In High-resolution Ftir Synchrotron Spectra
Twagirayezu, Sylvestre
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https://hdl.handle.net/2142/51022
Description
- Title
- Spectral Assignments And Analysis Of The Ground State Of Nitromethane In High-resolution Ftir Synchrotron Spectra
- Author(s)
- Twagirayezu, Sylvestre
- Contributor(s)
- Perry, David S.
- Dawadi, Mahesh B.
- May, Tim E
- Billinghurst, Brant E.
- Issue Date
- 2014-06-19
- Keyword(s)
- Large amplitude motions, internal rotation
- Abstract
- The Fourier Transform infrared spectra of CH$_{3}$NO$_{2}$, have been recorded, in the 400-950 \wn spectral region, at a resolution of 0.00096 \wn, using the Far-Infrared Beamline at Canadian Light Source. The observed spectra contain four fundamental vibrations: the NO$_{2}$ in-plane rock (475.2 \wn), the NO$_{2}$ out-of-plane rock (604.9 \wn), the NO$_{2}$ symmetric bend (657.1 \wn), and the CN-stretch (917.2 \wn). For the lowest torsional state of CN-stretch and NO$_{2}$ in-plane rock, transitions involving quantum numbers, {\it$m''$} = 0; {\it$J''$} {$\leq$ $50$} and {\it$K$}${_a}$$^{''}$ {$\leq$ $10$}, have been assigned with the aid of an automated ground state combination difference program together with a traditional Loomis Wood approach\footnote{C.~F.~Neese., \textit{An Interactive Loomis-Wood Package, V2.0,} {\textbf{56$^{th}$}},OSU Interanational Symposium on Molecular Spectroscopy (2001).}. Ground state combination differences derived from more than 2100 infrared transitions have been fit with the six-fold torsion-rotation program developed by Ilyushin et.al\footnote{V.~V.~Ilyushin, Z.~Kisiel, L.~Pszczolkowski, H.~Mader, and J.~T.~Hougen, \textit{J.~Mol.~Spectrosc.} \underline{\textbf{259}},~26, (2010).}. Additional sextic and octic centrifugal distortion parameters are derived for the ground vibrational state.
- Publisher
- International Symposium on Molecular Spectroscopy
- Type of Resource
- text
- Language
- English
- Permalink
- http://hdl.handle.net/2142/51022
- DOI
- https://doi.org/10.15278/isms.2014.RJ01
- 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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