Heterogeneous metal alloy engineering: embryonic growth of M-13 icosahedra in Ag-based alloy superatomic nanoclusters

Key Words:BONDING PATTERNS; GOLD CLUSTERS; SILVER; NANOPARTICLES; SUPRACLUSTERS; PD

Abstract:Alloying is an effective tool to comprehend the packing mechanism and adjust the properties of nanomaterials. Herein, two crystal structures of alloy nanoclusters with M-13 icosahedron cores, formulated as [Pt2Ag51(S-Adm)(28)(PPh3)(2)Cl-7](SbF6)(2) and [Au3Ag48(S-Adm)(28)Cl-7](SbF6)(2), are determined. The preferable site(s) of alloy metals in M-13 induces various packing patterns of M-13. The Pt2Ag21 and Au3Ag22 kernels are observed in Pt2Ag51 and Au3Ag48, respectively. The electronic structures of these two nanoclusters are evaluated. Overall, this work presents the effect of alloying on the packing patterns of M-13 and electronic structures of the metal nanoclusters.

Volume:56

Issue:91

Translation or Not:no