Silicon containing ferrocenyl phosphane ligands

New ferrocenyl phosphane ligands incorporating Si–P linkages, [(η-C5H4SiMe2PR2)2Fe], where R=Ph and Me, and the corresponding metal complexes [Mo(CO)4(L)] have been prepared and characterised. The molecular structures of [(η-C5H4SiMe2PR2)2Fe], where R=Ph and Me have been determined by single crystal X-ray diffraction.