The Raman spectra of CIOF! § cation in solutions of anhydrous HF were studied. In the CIOF2+HF2 -and CIOF2+BF4---HF systems, this cation exists as a pyramidal structure (C s symmetry.), while in the C1OF2+AuF6---HF system, it exists as a planar structure (C2v symmetry). Based on nonempirical calculations by the Hartree--Fock--Roothaan method, an explanation for the dependence of the structure of the C1OF2 + cation on the nature of the anion was proposed. For the C1--O bond vibrations, the correlation functions of vibrational and rotational relaxations were calculated, and the characteristic times of these processes were determined. The main contribution to the formation of the band contours corresponding to the above-mentioned modes is made by the vibrational dephasing.

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The Raman spectra of compounds R2NPX 2 (R = Mc and Et; X = F, CI, and Br) wet~ studied. The time correlation fimctions of vibrational and rotational relaxations as well as the characteristic times of these processes were calculated. Conclusions concerning the mechanisms of formation of the contours of the Raman lines with frequencies in the 670--705 cm -I range corresponding to the totally symmetric vibrations of the P--N bond in the R2NPX 1 molecules were drawn.