A new hexaferrocene complex with a [[[Me.sub.3]([mu.sub.3]-O)].sup.7+] core

The new hexaferrocene complex, [[Fe.sub.3.sup.III.III.III]O[(FeCOO).sub.6][(DMF).sub.3]].Cl[O.sub.4] (DMF = N,N-dimethylformamide), is synthesized and characterized by X-ray diffraction. The cyclic voltammogram of this complex has confirmed its redox activity associated with the presence of ferrocene units, with very small or negligible electronic interactions between them.