Rare Gas-Hydrogen Chloride Complexes: Far Infrared Observations of Ar-HCl and Xe-HCl, and Calculations of Excited States for Xe-HCl
The rare gas — hydrogen chloride (Rg-HC1) systems have become important prototypes for the study of anisotropic intermolecular forces in weakly bound molecular complexes. There has been a large amount of theoretical1–3 and experimental4–15 work on these systems, which are now understood in some detail, especially in the case of Ar-HC1. They are known to have linear equilibrium geometries with the rare gas atom located next to the hydrogen; the degree of anisotropy for internal rotation of the HC1 increases with the mass of the rare gas, so that Xe-HC1 is a more rigid molecule than Ar-HC1. The citations of previous RgHC1 work given here are not complete, but further references may be found in the papers cited, particularly in Refs. 2 and 3.
KeywordsQuantum Number Fundamental Band Band Origin Bend Band Orbital Angular Momentum Quantum Number
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