Far-Infrared (FIR) Fourier Spectroscopic Studies Of Molecular Motion Of Polar Molecules In Solid Inert Gas Matrices

D. Leutloff; R. Wittenbeck; E. Knozinger

doi:10.1117/12.932109

29 October 1981 Far-Infrared (FIR) Fourier Spectroscopic Studies Of Molecular Motion Of Polar Molecules In Solid Inert Gas Matrices

D. Leutloff, R. Wittenbeck, E. Knozinger

Author Affiliations +

Proceedings Volume 0289, 1981 Intl Conf on Fourier Transform Infrared Spectroscopy; (1981) https://doi.org/10.1117/12.932109
Event: 1981 International Conference on Fourier Transform Infrared Spectroscopy, 1981, Columbia, United States

Abstract

Polar molecules (such as acetonitrile, cyanoacetylene, acetone and nitromethane) imbedded in solid inert gas matrices give rise to different types of IR absorption bands in a spectral range where intramolecular vibrations may be excluded, i.e. below 150 cm^-1. Phonon bands of Ar, Kr and Xe are activated in the range below 72 cm^-1. Below 90 cm^-1 translational ("rattling") and librational modes of monomer molecules relative to the cage of inert gas atoms were observed. Between 80 and 130 cm^-1 the IR active intermolecular vibrations of antiparallel dimers appear. - Owing to the low energy throughput typical for the spectral range below 100 cm^-1 these studies had to be carried out using a Fourier spectrophotometer and not a dispersive system.

Citation Download Citation

D. Leutloff, R. Wittenbeck, and E. Knozinger "Far-Infrared (FIR) Fourier Spectroscopic Studies Of Molecular Motion Of Polar Molecules In Solid Inert Gas Matrices", Proc. SPIE 0289, 1981 Intl Conf on Fourier Transform Infrared Spectroscopy, (29 October 1981); https://doi.org/10.1117/12.932109

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