Synthesis and structural features of α-acyloxy-(η3-allyl)palladium complexes
摘要:
alpha-Acetoxy (eta(3)-allyl)palladium complexes were prepared from acyloxy functionalized allylsilanes under mild conditions and in good isolated yields. The substituent and ligand effects of the acetoxy group on the palladium-allyl bonding were studied by X-ray diffraction. These studies show that the acetoxy group generates a strongly deformed bonding between the metal atom and the allyl moiety. This unsymmetrical bonding is modulated by the sigma-donor/pi-acceptor properties of the ligands. The C-13 NMR studies indicated that the shift values correlate with the carbon-palladium bond lengths and the inductive effects of the acetoxy group. (c) 2006 Elsevier B.V. All rights reserved.