Synthesis and characterization of η3-allyl palladium(II) complexes with Ph2P(S)CHP(S)Ph2 and OC(CF3)CHCO(C4H3S) co-ligands

The new complexes [eta(3)-Me2CCMeCH2)Pd{eta(2)-Ph2P(S)CHP(S)Ph-2}] (1), [(eta(3)-Me2CCMeCH2)Pd{eta(2)-OC(CF3) CHCO(C4H3S)}] (2) and [(eta(3)-CH2CMeCH2)Pd{eta(2)-OC(CF3)CHCO(C4H3S)}] (3) have been synthesized by reacting [(eta(3)-allyl)Pd(mu-Cl)](2) with Ph2P(S)CH2P(S)Ph-2 and OC(CF3)CH2CO(C4H3S) in the presence of base. All have been characterized by elemental analysis, FT-IR, H-1-n.m.r and FAB-mass spectroscopy. Spectroscopic studies suggest that both ligands are bidentate, forming six-membered Pd-S-P-C-P-S and Pd-O-C-C-C-O palladacycles, the eta(3)-allyl group completing the coordination sphere.