Reactions of platinum(II) complexes. Part 2. Catalysis of the aquation of tetrachloroplatinate(II) ion by trichloro(η-ethylene)platinate(II)(Zeise's anion)

Abstract

The reaction [PtCl₄]^2–+ H₂O →[PtCl₃(OH₂)]^–+ Cl^– proceeds faster in the presence of [PtCl₃(C₂H₄)]^–, although the effect tends to be nullified gradually by increasing concentration of chloride ion. The actual catalyst is considered to be trans-[PtCl₂(C₂H₄)(OH₂)] since the increase in rate is proportional to the concentration of this complex.