119Sn Mössbauer and vibrational spectra for a number of SnF62− and SnCl62− complexes have been obtained. One fundamental for the SnF62− ion has been reassigned. Strong evidence for anion–cation interaction for (ClO2)2SnF6 is obtained both from the vibrational spectra and from the Mössbauer spectra where a non-zero quadrupole splitting is found.

Infrared and Raman spectra of CIFZSbF6, BrFZSbF6, and C!OZSbF6 are reported. Vibrational frequencies for the BrFz+ cation are assigned. In all compounds varlous degrees of anionxation interaction are found. The symmetry of the anion is reduced but no internal similarity between the three spectra is recognizable. In addition, strong coupling of vibrational modes for BrF2SbF6 is observed.