High resolution Fourier transform infrared spectroscopy of the ground state, ν3, 2ν3 and ν4 levels of 13CHF3
Abstract
We report high resolution (δ ν ∼ ⩽ 0.001cm-1) Fourier Transform Infrared (FTIR) spectra of the trifluoromethane (fluoroform) isotopomer 13CHF3 including results from synchrotron based spectroscopy at the Swiss light source (SLS). The analysis is extended to the pure rotational spectra in the Terahertz (far-infrared) range (15-100 cm-1, δν∼FWHM = 0.0006cm-1), the ν3 fundamental (ν∼0 = 695.292cm-1), the associated "hot" band 2ν3 -ν3 providing information on the level 2ν3 (ν∼0 = 1389.807cm-1) and the ν4 fundamental (ν∼0 = 1369.013cm-1) coupled to 2ν3 . The results are discussed in relation to the 13C isotope effect on the vibrational quantum dynamics as derived by theory and in relation to fluoroform as a greenhouse gas.
- Publication:
-
Journal of Molecular Spectroscopy
- Pub Date:
- July 2017
- DOI:
- 10.1016/j.jms.2017.05.003
- Bibcode:
- 2017JMoSp.337...96B
- Keywords:
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- 1<SUP>3</SUP>CHF<SUB>3</SUB>;
- Fluoroform;
- High resolution infrared spectroscopy;
- FTIR;
- THz