The present invention provides new complexes and medicaments based on dinuclear ruthenium, osmium and iron complexes comprising triply bridging thiolato, selenolato, alkoxo and/or amido ligands. The complexes preferably comprise a M2X3 core, in which M is a metal atom selected from Ru, Os and Fe and each one of said three X is independently selected from said bridging ligands, with the proviso that at least one ligand comprises a substituted or unsubstituted phenyl moiety.
