Utilization of the method of vibrational spectroscopy for investigation of platinum metal nitrocomplexes

By the methods of IR- and Raman-spectroscopy vibrational spectra of nitrocomplex by the composition M3[Rh(NO2)6], where M=Na-Cs, have been investigated. Linear dependence of some vibrational frequencies of the complexes on ionic radius of alkali metal cation is ascertained. Total similarity of spectra of the complexes in crystal phase and in aqueous solutions in the range of intramolecular vibrations testifies to identical symmetry of anion - Th. The prospects of vibrational spectroscopy data use for identification of qualitative composition of solid phases during cocrystallization of platinum metal nitrocomplexes are considered. 13 refs.; 3 figs