FTIR spectroscopy of the CH3-rocking, OH-bending, CH3-deformation and overtone C-O stretch bands of O-18 methanol

Saibei Zhao

doi:10.1117/12.2297843

1 October 1991 FTIR spectroscopy of the CH₃-rocking, OH-bending, CH₃-deformation and overtone C-O stretch bands of O-18 methanol

Saibei Zhao

Author Affiliations +

Proceedings Volume 1576, 16th International Conference on Infrared and Millimeter Waves; 15763M (1991) https://doi.org/10.1117/12.2297843
Event: 16th International Conference on Infrared and Millimeter Waves, 1991, Lausanne, Switzerland

Abstract

The high-resolution Fourier transform infrared (FTIR) spectrum of CH₃¹⁸OH has been investigated in order to probe the vibrational band structure with an ultimate view to identifying transitions for reported optically-pumped far-infrared (FIR) laser lines. Spectra were recorded from 1050 to 1620 cm^-1 and 1925 to 2050 cm^-1 at 0.004 cm^-1 resolution on a DA3.002 Bomem Fourier transform spectrometer. Several vibrational bands occur in these regions. For the in-plane CH₃-rocking mode, series in a combination band from the ground state to torsionally excited levels of the CH₃-rock have been observed and assigned. Extensive transition series have also been identified for the asymmetric CH₃-deformation band, the OH-bending band, and the C-O stretch v_co=2−0 overtone band. Analysis is in progress to determine molecular constants in the excited states.

Citation Download Citation

Saibei Zhao "FTIR spectroscopy of the CH₃-rocking, OH-bending, CH₃-deformation and overtone C-O stretch bands of O-18 methanol", Proc. SPIE 1576, 16th International Conference on Infrared and Millimeter Waves, 15763M (1 October 1991); https://doi.org/10.1117/12.2297843

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