The size-dependent structural evolution of scandium–selenium clusters remains poorly understood, particularly regarding the origin of growth transitions and the emergence of stable building blocks. Here, the authors combine global search techniques, density functional theory calculations and additional single-point validation to study neutral and anionic Sc6Sen0/- (n = 1–12) clusters, reporting a two-stage growth behavior with n = 8 as the critical turning point, after which structural reorganization leads to competing link-like and pentagonal-pyramidal motifs.
- Liyuan Hou
- Jucai Yang
- Zhaofeng Yang