K2[PtCl6] + 5KI PtI2 + K[I(I)2] + 6KCl
Potassium hexachloridoplatinate(IV) react with potassium iodide to produce platinum(II) iodide potassium diiodoiodate(I) and potassium chloride. Potassium iodide - concentrated solution. This reaction takes place at a temperature near 60°C.