Spectroscopic Investigation of Additive and Non-Additive Interactions in the Ne–Ar–CO2 Complex.
Yunjie Xu and Wolfgang Jäger,
Department of Chemistry, University of Alberta, Edmonton AB T6G 2G2, Canada
Rotational spectra of various isotopomers of the Ne–Ar–CO2 van der Waals complex were investigated with a molecular beam Fourier transform microwave spectrometer. Ne–Ar–CO2 belongs to a new class of ternary van der Waals complexes; it is of the type RG-RG'-molecule that has not been investigated before. Both a- and b-type rotational transitions were observed in the frequency range from 4 to 19 GHz. The planar moments obtained were interpreted in terms of effective structural parameters. These parameters were compared with those of the respective dimer subunits to extract information about additive and non-additive interactions.