Solvent-Specific Reduction of Na2PtI6 in Acetone

摘要

Oxidation state of iodide complexes of PtII and Pt-IV in large excess of NaI with respect to platinum in water and acetone solution has been determined by means of Pt-195 NMR spectroscopy. In acetone, iodide complexes of PtIV are almost quantitatively reduced into PtII, and iodine is bound in a poorly soluble polymeric complex with sodium iodide and acetone. Iodometric titration has revealed the formation of equivalent amount of iodine. Reduction of platinum has not been observed in aqueous medium.