Thermochemistry of platinum–benzoyl and platinum–dibenzylidene-acetone complexes

Abstract

The enthalpies of thermal decarbonylation of (PPh₃)₂ClPt(RCO) complexes, where RCO = benzoyl or substituted benzoyl, have been measured by differential scanning calorimetry. A minimum value of 180 kJ mol^–1 is calculated for the platinum–benzoyl bond dissociation energy. A value of 273 kJ mol^–1 is calculated for the dissociation energy of the platinum–carbon π-bond in the complex bis(dibenzylideneacetone)platinum(0) from calorimetric measurements.