Kinetics of complex formation between palladium(II) acetate and bis(diphenylphosphino)ferrocene

The kinetics of complex formation between palladium(II) acetate, and 1,1’-bis(diphenylphosphino)ferrocene, dppf, in two different deuterated solvents CDCl3 and DMSO-d6 were investigated using 31P NMR spectroscopy. The mole ratio and the 31P-chemical shifts in DMSO-d6 solution revealed the formation of an intermediate, which is gradually converted into the more stable [Pd(dppf)OAc)2] species with a dppf acting as a chelate ligand. In the chloroform solution however, the interaction of metal ion and the ligand resulted directly in the formation of [Pd(dppf)OAc)2] species with a chelating dppf. The rate constant for the complexation reaction was evaluated from computer fitting of the corresponding integration-time data.

Graphical abstractThe kinetics of complex formation between palladium and dppf in CDCl3 and DMSO-d6 were investigated using 31P-NMR spectroscopyFigure optionsDownload full-size imageDownload as PowerPoint slide