Abstract
Orange-red crystals of μ3-phosphido-nonakis(trifluorophosphine)-triiridium, PIr3(PF3)9, are obtained by reductive fluorophosphination of IrCl3 at 80-200 atm PF3-pressure. The structure of the new complex is proven by its mass spectrum, displaying a successive removal of nine PF3-groups. Rupture of the PIr3-cluster occurs only to an extremely small amount even with high energy electrons. UV-irradiation of HCo(PF3)4 and a mixture of HCo(PF3)4 with HIr(PF3)4 yields the bridged complexes (PF3)3Co(H)(PF2)Co(PF3)3 and (PF3)3Co(H)(PF2) Ir(PF3)3. The three complexes (PF3)4M-M(PF3)4 (M = Co or Ir) with a direct metal-metal bond are not obtainable under these conditions. The mass spectra of all compounds and of Ir2(PF3)8 are discussed.
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