Investigating the chemical ordering for fixed shapes provides valuable insights regarding the stability of different surface sites, but the structure and resulting shape of metal NPs are indeed known to depend on their composition. Equilibrium shapes derived from the Wulff construction vary along different monometallic and bimetallic particles . Even more drastic structural transitions involving departures from fcc-like structures can emerge in bimetallic particles when combining weakly miscible metals with a large size-mismatch. In such cases, symmetry-breaking transitions from an icosahedral structure to a decahedral one can occur as a means of releasing strain .