Far infrared spectra of van der Waals molecules in HCl–noble gas mixtures
- 1 July 1980
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 73 (1), 15-20
- https://doi.org/10.1063/1.439900
Abstract
Results of far infrared measurements on HCl–noble gas mixtures in the region 14–240 cm−1 at low temperatures and densities between 0.4 and 4 amagat, are presented. Between the free HCl rotational lines distinct absorption features are observed that are assigned to X–HCl van der Waals molecules (X=HCl, Ar, Kr, Xe). Various internal motions of the complexes are considered and it is concluded that the spectra originate from internal rotatory motion of the HCl subunit. A model for an effective angular potential governing this motion is discussed. The trends in the experimental spectra suggest that the well depth increases in the series Ar–Kr–Xe, reflecting an increase in anisotropy in the above order.Keywords
This publication has 18 references indexed in Scilit:
- Microwave and radio frequency spectrum of XeHClThe Journal of Chemical Physics, 1979
- Direct determination of intermolecular potentials from gaseous transport coefficients aloneMolecular Physics, 1978
- Noise levels in broad band Fourier transform absorption spectrometryInfrared Physics, 1977
- Van Der Waals MoleculesAnnual Review of Physical Chemistry, 1976
- Centrifugal distortion in ArHClThe Journal of Chemical Physics, 1976
- The spectroscopy of van der Waals moleculesCanadian Journal of Physics, 1976
- Temperature dependence of the pressure induced width and shift of the rotational lines of HClChemical Physics Letters, 1975
- ArHCl interaction potential from differential elastic scattering cross section measurementsChemical Physics Letters, 1974
- Etude à trés haute résolution du spectre d'absorption infrarouge induit à basse température dans le gaz chlorhydrique pur et mélangé à l'argonSpectrochimica Acta Part A: Molecular Spectroscopy, 1973
- Interferometric measurements of the pure rotational spectra of HCl and DClJournal of Quantitative Spectroscopy and Radiative Transfer, 1972