Standard molar enthalpies of formation of eight copper(II) fluorinated β-diketonates. Mean (Cu−O) bond dissociation enthalpies

Abstract

The standard (p°=0.1 MPa) molar enthalpies of formation of eight copper(II) fluorinated β-diketonates at the temperature 298.15 K were determined by high-precision solution and reaction calorimetry. The standard molar enthalpies of sublimation of the same copper(II) complexes at the temperature 298.15 K were determined by effusion methods. From the enthalpies of formation of the complexes in the gaseous state, the average molar dissociation enthalpies 〈Dm〉 (Cu−O) were derived and compared with identical parameters obtained for non-fluorinated copper(II) β-diketonates.