The first synthesis of the perfluorinated Cp* was described in 1980 by Lemal et. al. and later improved by Chambers et. al.. In previous works we have demonstrated the first coordination of [C5(CF3)5] -and the unique reactivity towards substitution lability, as well as the increased oxidative stability compared to ordinary Cp ligands. In preliminary works we have shown, that the incorporation of [C5(CF3)5] -into ferrocene shifts the redox potential of [Fe(C5H5)(C5(CF3)5] by ≈1.4 V to more positive values. Hereby, metallocenes bearing [C5(CF3)5] -as a ligand could enable the synthesis of a metallocene anion with a redox potential significantly more positive than -2 V, thereby allowing the synthesis and isolation of a metallocene anion paired with decamethylcobaltocenium [Co(C5(CH3)5)2] + as a counter ion. Figure 1. Experimentally obtained redox potentials in V versus Fc + /Fc of various metallocene anions, neutral metallocenes, and metallocene cations.