Dicationic tetrakis(triphenylphosphine)palladium(II) and tetrakis(triphenyl phosphite)palladium(II) complexes

Article abstract of DOI:10.1021/ic00134a072

The synthesis and properties of the cationic palladium(II) complexes are described. Dicationic [Pd(PPh₃)₄](X)₂ (X = BF₄^-, PF₆^-) and [Pd(P(OPh)₃)₄](PF₆)₂ have been prepared by the reaction of Pd(PPh₃)₄ with CPh₃X (X = BF₄^-, PF₆^-). A pentacoordinated Pd(II) complex of the heterocyclic ligand 1,10-phenanthroline, [Pd(1,10-phen)₂(PPh₃)](X)₂) was obtained from the reaction of [Pd(PPh₃)₄](X)₂ with 1,10-phen. Monocationic [Pd(CH₃COCHCO-R)(PPh₃)₂](X) (R = Me, OMe) has been isolated from the reaction of Pd(PPh₃)₄ with CPh₃X in the presence of acetylacetone or methyl acetoacetate. Likely structures and some features for these new complexes are proposed from ¹H NMR and IR spectrometry.