If, as described by the forcefield, these events are taking place frequently within 100 ns of simulation, it would be expected to find experimental evidence of this species even in UHV conditions for pressures above 1 Pa. Despite this, we were not able to find experimental evidence of the existence of the Pt 6 O 8 species. Instead, platinum dissolution is believed to occur at the interface at specific potentials, and to be an atomic process that might be influenced by oxide formation, but not via Pt 6 O 8 species. The presence of this species will be further investigated in the next sections, by performing geometry optimizations with MACE-MP-0 and subsequent DFT calculations.