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 degenerate 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 structure. The two bands coupled by an A - E Coriolis interaction have been analyzed simultaneously. No splitting due to internal motion has been observed. Band shifts by the formation of the complex are discussed in conjunction with the magnitudes of A - E splitting.