15min:

YUNJIE XU, GEOFFREY ARMSTRONG AND WOLFGANG JÄGER, Department of Chemistry, University of Alberta, Edmonton, AB, Canada, T6G 2G2.

Rotational spectra of various isotopomers of the NeArHCl 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.