Abstract
The Raman spectra of slightly acidified aqueous solutions of trimethylplatinum(IV) sulphate, nitrate and perchlorate have been obtained. Each solution showed the main features of the spectrum of the corresponding “free” anion. The remaining lines in each case, being common to all three spectra, were attributed to the common species (CH 3) 3Pt +(aq). The results indicate that these compounds are extensively dissociated in aqueous solution at concentrations of the cation approaching 3 M. The strongest line, slightly polarized, appeared at 600 cm −1 and was assigned to the PtC stretching modes. A weak, broad, polarized band about 357 cm −1 in each spectrum was considered to be due to the PtOH 2 symmetrical stretching vibration.
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