Superatomic-based chirality:Asymmetric structures constructed by superatoms

Chirality is one of the fundamental properties of molecules traditionally con-structed from atoms.Here,we report for thefirst time the successful construction of asymmetric chiral structures utilizing highly symmetric endohedral metallo-fullerene superatoms based on their own bonding properties.Specifically,stable mirror-symmetric sinister and rectus structures are obtained by selecting a super-atom capable of forming four chemical bonds as the chiral center.Further analysis shows that the chiral vibration frequency of superatomic assemblies can be as low as a few wavenumbers,which greatly expands the range of chiral spectra com-pared to atom-based molecules.We term this type of chirality based on superatoms as“superatomic-based chirality”.It is anticipated that this work will significantly expand the variety of chiral structures at the atomic level.