Reactivity of a (Fe-NO)-(Fe-NO3) system in the presence of a ferrocene-ferricinium group tethered nearby via a ferrocenyl phosphine linkage (FcP2): crystal structures of 2(μ-FcP2)> and

Article abstract of DOI:10.1016/0022-328X(94)05235-4

The nitrosyl dimer <2> (1) reacts with 1,1'-bis(diphenylphosphino)ferrocene (FcP2) to yield 2(μ-FcP2) (2), the structure of which has been determined.The FcP moiety bridges two Fe(NO)2(Cl) groups symmetrically.Oxygenation of 1 in the presence of FcP2 yields (5): Complex 5 catalyses the autoxidation of cyclohexene.It transfers the oxygen atoms of its nitrato groups to phosphines.When allowed to react with an excess of FcP2, 2 gives (4); the subsequent formation of (3) is attributed to th e reaction of 4 with chlorine liberated in situ.The structure of 4 was also determined.Keywords: Iron; Nitrosyl; Ferrocene ligand; Nitrato complex; X-ray diffraction; Oxidation