Homoleptic Silver-Rich Trimetallic M20 Nanocluster

Inorg Chem. 2022 May 9;61(18):6695-6700. doi: 10.1021/acs.inorgchem.1c04013. Epub 2022 Apr 25.


Two silver-rich M20 alloy nanoclusters (NCs), [Cu3.5Ag16.5{S2P(OnPr)2}12] (1) and [Cu2.5AuAg16.5{S2P(OnPr)2}12] (2), were synthesized and fully characterized by electrospray ionization mass spectrometry, NMR spectroscopy, and X-ray crystallography. Cluster 2, the first structurally characterized trimetallic M20 NC, was produced by doping one Au atom into a bimetallic M20 NC. Structural analyses showed the preferred positions of Group 11 metals in the yielded M20 NCs. Their antioxidation ability has been investigated, and the time-dependent UV-vis spectrum shows that the presence of CuI atoms in structures 1 and 2 can improve the antioxidant ability.

MeSH terms

  • Silver* / chemistry
  • Spectrometry, Mass, Electrospray Ionization*


  • Silver