Platinum complexes with unsaturated amines. Part V. Thermodynamics of formation of complexes with unsaturated alcohols

Stability constants for the formation of platinum(II)–olefin complexes with unsaturated alcohols have been measured by a spectrophotometric method. Enthalpy and entropy changes, obtained from the temperature-dependence of the stability constants, indicate that the stability constants with unsaturated alcohols are higher than those with unsaturated ammonium cations largely owing to solvation effects. But-3-en-1-ol reacted with the tetrachloroplatinate(II) ion in the presence of dilute acid to give a butadiene–platinum(II) complex.