Centres of Excellence in Molecular and Interfacial Dynamics and Department of Physics, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada
Li-Hong Xu and R. M. Lees, "Fourier-transform infrared spectroscopy, torsion–vibration coupling, and new far-infrared laser assignments for 13CD3OH methanol," J. Opt. Soc. Am. B 11, 155-169 (1994)
High-resolution Fourier-transform spectra of the lower vibrational fundamentals of the 13CD3OH isotopomer of methanol are under investigation in the 800–1350-cm−1 region, including the ν8 in-plane CD3-rocking (A′), ν7 CO-stretching (A′), ν5 CD3-deformation (A′), and ν4 OH-bending (A′) bands. The torsion–vibration–rotation energy-level manifold for these lower modes displays numerous perturbations that are due to torsion–vibration interactions and contains a variety of features of interest in the excited-state energy-level patterns. Analyses of the bands show that there are major problems in formulating effective Hamiltonians and in determining reliable molecular constants for the excited states because of strong torsion–vibration coupling. Assignments for five far-infrared laser transition systems have been deduced; these involve the CD3-rocking, CO-stretching, and CD3-deformation states.
Li-Hong Xu, R. M. Lees, E. C. C. Vasconcellos, L. R. Zink, K. M. Evenson, S. C. Zerbetto, and Adriana Predoi J. Opt. Soc. Am. B 12(12) 2352-2359 (1995)
A. Bertolini, G. Carelli, J. C. S. Moraes, A. Moretti, F. Strumia, E. M. Telles, A. Scalabrin, and D. Pereira J. Opt. Soc. Am. B 14(11) 2800-2803 (1997)
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NRC, Herzberg Institute of Astrophysics of the National Research Council of Canada in Ottawa; UBC, Department of Chemistry of the University of British Columbia in Vancouver; Giessen, Physikalisch-Chemisches Institut of the Justus-Liebig-Universität in Giessen, Germany.
Table 2
Assignments of FIR Laser Lines in 13CD3OH Optically Pumped by a CO2 Laser
Transitions in brackets are predicted.
Wave numbers with asterisks are converted from accurate frequency measurements with c = 29979.2458 cm−1.
Refs. 17 and 18.
Ref. 18.
Refs. 6 and 18.
Ref. 21.
Table 3
Infrared and Far-Infrared Spectroscopic Data (cm-1) for 13CD3OH FIR-Laser Systems
NRC, Herzberg Institute of Astrophysics of the National Research Council of Canada in Ottawa; UBC, Department of Chemistry of the University of British Columbia in Vancouver; Giessen, Physikalisch-Chemisches Institut of the Justus-Liebig-Universität in Giessen, Germany.
Table 2
Assignments of FIR Laser Lines in 13CD3OH Optically Pumped by a CO2 Laser
Transitions in brackets are predicted.
Wave numbers with asterisks are converted from accurate frequency measurements with c = 29979.2458 cm−1.
Refs. 17 and 18.
Ref. 18.
Refs. 6 and 18.
Ref. 21.
Table 3
Infrared and Far-Infrared Spectroscopic Data (cm-1) for 13CD3OH FIR-Laser Systems
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