Palladium (II) complexes with mono-oxide 1,1′-bis(diphenylphosphino)metallocene ligands [Fe(η5-C5Me4PPh2)(η5-C5Me4P{O}Ph2)] and [Os(η5-C5H4PPh2)(η5-C5H4P{O}Ph2)]

The monoxides [Fe(η5-C5Me4PPh2)(η5-C5Me4P{O}Ph2)] (1) and [Os(η5-C5H4PPh2)(η5-C5H4P{O}Ph2)] (2) have been prepared by treatment of the corresponding diphosphines with CCl4 and methanol. The 1 and 2 react with [Pd(PhCN)2Cl2] to give dichlorides [{Fe(η5-C5Me4PPh2)(η5-C5Me4P{O}Ph2)}PdCl2] (3) and [{Os(η5-C5H4PPh2)(η5-C5H4P{O}Ph2)}PdCl(μ-Cl)]2 (4) with κ2-P,O and κ1-P chelated ligands, correspondingly. The 3 and 4 were tested in catalytic amination and Suzuki type reactions of p-bromotoluene to show moderate activity.