Browse Abstracts & Presentations - 2014 International Symposium on Molecular Spectroscopy by Subject "Large amplitude motions, internal rotation"

• (International Symposium on Molecular Spectroscopy, 2014-06-19)
Rotationally-resolved vibrational spectra have been collected from 100-1000 cm$^{-1}$ for the four-membered ring trimethylene sulfide (c-C$_{3}$H$_{6}$S) using synchrotron light at the far infrared beamline of the Canadian ...

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Microsoft PowerPoint 2007 (8MB)
• (International Symposium on Molecular Spectroscopy, 2014-06-19)
The high-resolution rotationally resolved Fourier Transform Far-infrared spectrum of the NO$_{2}$ in plane-rock band (440-510 cm$^{-1}$) of nitromethane (CH$_{3}$NO$_{2}$) has been recorded using the Far-Infrared Beamline ...

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Microsoft PowerPoint 2007 (11MB)
• (International Symposium on Molecular Spectroscopy, 2014-06-19)
Graphical displays of C-H stretching normal-mode coefficients from recent quantum chemical projected-frequency calculations are compared with analogous displays constructed after reexamination of results from more extensive ...

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• (International Symposium on Molecular Spectroscopy, 2014-06-19)
Metal ions play important roles in biologically processes. Among these, alkali metal ions are of great importance. Their solvation is one of the fundamental processes having great effect on their activity and has been in ...

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Microsoft PowerPoint 2007 (7MB)
• (International Symposium on Molecular Spectroscopy, 2014-06-19)
Rotationally-resolved direct infrared absorption spectra of hydroxymethyl radical (H$_{2}$COH) in the CH$_{2}$ asymmetric mode (\nub{2}) were observed for the first time using the Boulder difference frequency generation ...

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Microsoft PowerPoint 2007 (10MB)
• (International Symposium on Molecular Spectroscopy, 2014-06-19)
NCNCS is a quasi-linear molecule that displays plentiful spectroscopic signatures of transition from the asymmetric top to the linear rotor regime. The transition takes place on successive excitation of the $\nu_7$ ...

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Microsoft PowerPoint 2007 (3MB)
• (International Symposium on Molecular Spectroscopy, 2014-06-19)
Hydroxymethyl radical (CH$_{2}$OH) is an important radical in modeling combustion flame chemistry as well as chemistry in the interstellar medium. We have recently observed high resolution jet cooled infrared spectra of ...

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Microsoft PowerPoint 2007 (4MB)
• (International Symposium on Molecular Spectroscopy, 2014-06-19)
The barrier to methyl internal rotation of an asymmetric two ring system depends on the position of the methyl substitution. A cavity based Fourier transform microwave spectrometer was used to record rotational spectra of ...

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Microsoft PowerPoint 2007 (2MB)
• (International Symposium on Molecular Spectroscopy, 2014-06-19)
We present the rotational spectra studies of two acetamide conjugated molecules, namely, N-methylformamide (\chem{CH_3NHCHO}) and propionamide (\chem{CH_3CH_2CONH_2}). New measurements have been performed in the frequency ...

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Microsoft PowerPoint 2007 (6MB)
• (International Symposium on Molecular Spectroscopy, 2014-06-19)
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 ...

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Microsoft PowerPoint 2007 (10MB)
• (International Symposium on Molecular Spectroscopy, 2014-06-19)
The complexation of chlorofluorocarbons (CFCs) with atmospheric water and pollutants of the atmosphere affects their reactivity and it seems to accelerate, for example, the decomposition rate of freons in the atmosphere ...

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Microsoft PowerPoint 2007 (5MB)
• (International Symposium on Molecular Spectroscopy, 2014-06-19)
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 ...

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Microsoft PowerPoint 2007 (18MB)
• (International Symposium on Molecular Spectroscopy, 2014-06-19)
We report on the analysis of our spectrum from 60-140 \wn\ of the $\nu_7$ bending fundamental and associated hot band sequence of NCNCS, obtained on the far-infrared beamline at the Canadian Light Source synchrotron. The ...

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Microsoft PowerPoint 2007 (5MB)
• (International Symposium on Molecular Spectroscopy, 2014-06-19)
The tert-Butyl acetate molecule was studied using a combination of quantum chemical calculations and molecular beam Fourier transform microwave spectroscopy in the 9 to 14 GHz range. Due to its rather rigid frame, the ...

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PDF (1MB)
• (International Symposium on Molecular Spectroscopy, 2014-06-19)
The large-amplitude in-plane bending vibration of NCNCS at 85 \wn \, has a potential energy function which includes a barrier to linearity with a height of about 285 \wn. The topology of the surface of the space defined ...

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Microsoft PowerPoint (11MB)
• (International Symposium on Molecular Spectroscopy, 2014-06-19)
The couplings between the CH stretch and CH${_3}$ torsion in the methyl rotor have been widely studied in methanol.\footnote{D.~S.~Perry \textit{J.~Mol.~Spectpsc.} 2009, 257, 1-10} In this research, we are focusing on the ...

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Microsoft PowerPoint 2007 (3MB)