Spectroscopic Study of the Mixed Rare Gas - Molecule Trimer Ne–Ar–HCl.
Yunjie Xu, Geoffrey Armstrong and Wolfgang Jäger
Department of Chemistry, University of Alberta, Edmonton AB T6G 2G2, Canada
Rotational spectra of various isotopomers of the Ne–Ar–HCl trimer, including those with H35Cl, H37Cl, D35Cl, D37Cl, 20Ne, and 22Ne were studied with a pulsed jet cavity Fourier transform microwave spectrometer. Both a- and b-type transitions could be measured in the frequency range from 3.8 to 17 GHz. Nuclear hyperfine structures due to 35Cl, 37Cl, and D were observed and analyzed. The resulting spectroscopic constants were used to derive effective structural parameters. The possibility to gain insight into non-additive contributions to the interaction energy through comparison with NeHCl, ArHCl, and Ar2HCl is discussed.