FREE JET INFRARED-SPECTROSCOPY OF SIF4-RARE GAS COMPLEXES

The rotation-vibration spectra of (SiF4)-Si-28-Ar and (SiF4)-Si-28-Kr- 84 complexes have been studied in the 10 mu m region. The triply degen erate nu(3) (F-2) band of SiF4 reduces to nearly degenerate parallel ( A) and perpendicular (E) band of the complex with the C-3 upsilon stru cture. The two bands coupled by an A - E Coriolis interaction have bee n analyzed simultaneously. No splitting due to internal motion has bee n observed. Band shifts by the formation of the complex are discussed in conjunction with the magnitudes of A - E splitting. (C) 1995 Americ an Institute of Physics.