Allyl Group Transfer between M(II) and M(O) Centers (M = Pd, Pt) Proceeding through Anti Nucleophilic Attack at η3-Allyl Ligand

Reactions of [Pd(η3-allyl)(PPh3)2]+ (allyl = CH2CHCH2, CH2CMeCH2, (1c)) with Pt(C2H4)(PPh3)2 in CDCl3 readily afforded the corresponding η3-allylplatinum(II) cations in high yields. Cis–trans isomerization of 1c or its platinum analogue was catalyzed by Pd(0) or Pt(0) complexes via anti attack of M(0) species at the allyl ligand.