The relevance of biological redox processes of metalloproteins for living organisms inspired chemists to design redox active macromolecular compounds. In this context the functionalization of dendrimers with redox active building blocks has received considerable attention as they are well defined macromolecules in terms of size and peripheral chemical functionality. In the last decades these dendrimers have found applications as multielectron redox catalysts as well as reservoirs, in the surface modification of electrodes or in electrochemical sensors. Their molecular architecture often resembles starshaped structures with a core and different ligand building blocks which are not limited to organic moieties but also include examples of p-block and metal(organic) fragments. A widely used redox active building block is the ferrocenyl group due to the reversibility of the Fe +II/+III redox couple and the high thermal stability of the oxidized and the native form in particular. In many molecular stars the metallocene unit is located in the outskirts of the molecule despite its C5 symmetry rendering it as an ideal core building block. Examples of ferrocene centered metallostars are rare probably due to the synthetic difficulties associated with the poly-or perfunctionalization of ferrocene. In 2021 we reported a simple perfunctionalization approach by treatment of ferrocene with mercury(II) carboxylates to obtain FeC10(HgX)10 (X = O2CC3H7, O2CCF3, O2CCCl3) in multigram scale. Although these compounds offer relatively weak Hg-C bonds allowing transmetallation and electrophilic substitution reactions they are chemically inert towards air and strong Brønsted acids (e.g. CF3CO2H pKa = -2.7 estimated in H2O ) caused by the low polarity of the Hg-C bond as well as the low Lewis acidity of the R-Hg-X units to form adducts with increased coordination number. Higher coordination numbers are usually observed in organomercury compounds with electron deficient substituents, as shown by the Gabbaï group for [o-(HgC6F4)3] which forms supramolecular architectures with aromatic hydrocarbons or weak Lewis acid/base adducts with a variety of O, N, P and S donors. In contrast to this, in polar organomercury compounds R-Hg-X the anionic groups can be displaced by neutral ligands, e.g. phosphines, to give [RHg(PR3)]X (Eq. 1) maintaining the linear two-fold coordination. The resulting cation [RHg(PR3)] + is stable in presence of weakly coordinating anions (e. g. X = ClO4 ꟷ ) but dismutates in presence of halides (Eq. 2; X = Cl ꟷ < Br ꟷ < I ꟷ ). We envisioned that the displacement of anionic ligands in permercurated ferrocenes FeC10(HgX)10 would lead to the formation of highly charged species. Moreover, such polycations should be ideal precursors for ferrocene centered metallostars since they offer accessible coordination sites with predominantly linear coordination around the mercury atoms.