PENTAFLUOROPHENYL COMPLEXES OF PALLADIUM AND PLATINUM-CONTAINING CHELATING AND BRIDGING FE(C(5)H(4)PPH(2))(2) OR FE(C(5)H(4)SPH)(2)

Synthons of M(C6F5)(2) or M(C6F5)X (M = Pd, X = Br; M = Pt, X = Cl) react with ferrocenyl compounds Fe(C(5)H(4)PPh(2))(2) (dppf) or Fe(C(5)H(4)SPh)(2) (dtpf) to give cis-[M(C6F5)(2)(L-L)] and cis-[M(C6F5)X(L-L)] complexes of palladium and platinum. The trans geometry is obtained only when trans-[Pd(C6F5)(2)(tht)(2)] reacts with dppf giving trans-[{Pd(C6F5)(2)(dppf)}(n)]. Removal of the halide from halopentafluorophenyl complexes with silver salts gives pentanuclear species [(mu-dtpf){Pt(C6F5)(dtpf)}(])[ClO4](2) and [(mu-dppf){Pd(Cl)(dppf)}(2)][ClO4](2) when the reaction is carried out in the presence of dtpf and dppf, respectively. The use of selective F-19 homodecoupling allowed the determination of (4)J(P-31-F-19) for cis- and tvans-(C6F5)Pd(phosphine) arrangements. Cyclic voltammetric studies on selected complexes usually show a reversible one-electron wave at about 1.0-1.2 V referred to ferrocene.