COMPLEXES OF THE TRIPOD LIGAND, TRIS(DIPHENYLPHOSPHINO)METHANE

Article abstract of DOI:10.1016/S0022-328X(00)99162-9

Tris(diphenylphosphino)methane (TPM) is shown to exhibit a variety of coordination modes.In and it is monodentate while in and cis-, two of the three phosphorus atoms chelate to the metal.The uncoordinated arms of TPM in the mono- and bidentate complexes can coordinate other metals to give the homo- and heterobimetallic complexes <(OC)4Fe(μ-TPM)Fe(CO)3>, <(OC)4Fe(μ-TPM)Mo(CO)4> and trans-.In the last, an unusual virtually-coupled 31P NMR spectrum is seen.With (R=H, Cl) under mild conditions is formed in the ligand functions in a bidentate, bridging fashion while under more strenuous conditions the ligand-capped clusters form.