to form. As illustrated in Figure , we also report similar dissociation-like events taking place during the dynamics and leading to a number of partially detached Pt 6 O 8 species on the nanoparticle. The occurrence of these events strongly depends on the oxygen fraction occupancy, with higher occupancies leading to a greater number of detachments. Each of these events is accompanied by a significant energy reduction as schematically shown in Figure . These species were first reported by Kirchhoff et al. where the authors investigated the possibility of a stability region for the small cluster in the aqueous phase with specific charge and spin states.