Vibrational spectra of platinum superoxo complexes

Aqueous alkaline (KOH, KOD) solutions of hexahydroxoplatinate and "blue" su peroxohydroxoplatinate complexes were studied by Raman spectroscopy. The sp ectra of superoxo complexes shows the bands at 1020 and 1060 cm(-1) that ar ise from the O-2(-) moiety. Solid samples of platinum hydroxide and the pre cipitates isolated from "blue" solutions were studied by IR and Raman spect roscopy. The spectra of hexahydroxoplatinate(IV) were assigned assuming the C-3i symmetry of the Pt(OH)(6)(2-) group. The Raman spectra of the decompo sition products of the solid superoxo complex (v(O-O) = 1080 cm(-1) for O-2 (-)) show the bands that arise from a platinum peroxo complex (v(O-O) = 829 cm(-1) for O-2(2-)).