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Peer-reviewedCC BYJournal of the American Chemical Society

A Tetrahedral Silver-Rich Supercluster Composed of 8-Electron IrH 2 Ag 12 Icosahedra

  • Tzu‐Hao Chiu1,2
  • Michael Nivendran Pillay1,2
  • Yoshiki Niihori3
  • Yuichi Negishi3
  • Samia Kahlal4
  • Jean‐Yves Saillard4
  • C. W. Liu1,2
4 affiliations
  1. 1Department of Chemistry
  2. 2National Dong Hwa University
  3. 3Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
  4. 4Univ Rennes, CNRS, ISCR-UMR 6226
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Abstract

Although the prediction of constructing three-dimensional self-assembled superclusters using icosahedral superatoms as building blocks dates back to 1987, this task remains a significant challenge, due to the difficulty in synthesizing and characterizing such clusters. In this study, the 8-electron superatom IrH2Ag19[S2P(OnPr)2]12 (1) was discovered for the first time, with IrH2 as the dopant. Its distinctive superatomic core, IrH2Ag12, was utilized as a building block for the self-assembly of a tetrahedral supercluster. A new hydride-containing 32-electron Ir/Ag alloy nanocluster, (IrH2)4Ag50[S2P(OnPr)2]22 (2), was prepared using homoleptic ligand. Similar to the prediction by Teo et al., the four icosahedra are assembled in a tetrahedral manner, which is reminiscent of tetrahedrane, to form the [(IrH2)4Ag42]14+ core passivated by [Ag8{S2P(OnPr)2}22]14–. Unlike previous studies that used M13 units, this study uniquely utilizes four (IrH2)@Ag12 units sharing six vertices to achieve the tetra-icosahedral kernel. The discovery of this 3D supercluster can more effectively help us understanding the growing process from nanoclusters to nanoparticles.

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Cite

BibTeXRIS
BibTeX
@article{chiu2026tetrahedral,
  title = {{A Tetrahedral Silver-Rich Supercluster Composed of 8-Electron IrH 2 Ag 12 Icosahedra}},
  author = {Tzu‐Hao Chiu and Michael Nivendran Pillay and Yoshiki Niihori and Yuichi Negishi and Samia Kahlal and Jean‐Yves Saillard and C. W. Liu},
  journal = {Journal of the American Chemical Society},
  year = {2026},
  month = may,
  doi = {10.1021/jacs.5c22409},
  url = {https://doi.org/10.1021/jacs.5c22409},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - A Tetrahedral Silver-Rich Supercluster Composed of 8-Electron IrH 2 Ag 12 Icosahedra
AU  - Tzu‐Hao Chiu
AU  - Michael Nivendran Pillay
AU  - Yoshiki Niihori
AU  - Yuichi Negishi
AU  - Samia Kahlal
AU  - Jean‐Yves Saillard
AU  - C. W. Liu
PY  - 2026
DA  - 2026/05/29
JO  - Journal of the American Chemical Society
DO  - 10.1021/jacs.5c22409
UR  - https://doi.org/10.1021/jacs.5c22409
AB  - Although the prediction of constructing three-dimensional self-assembled superclusters using icosahedral superatoms as building blocks dates back to 1987, this task remains a significant challenge, due to the difficulty in synthesizing and characterizing such clusters. In this study, the 8-electron superatom IrH2Ag19[S2P(OnPr)2]12 (1) was discovered for the first time, with IrH2 as the dopant. Its distinctive superatomic core, IrH2Ag12, was utilized as a building block for the self-assembly of a tetrahedral supercluster. A new hydride-containing 32-electron Ir/Ag alloy nanocluster, (IrH2)4Ag50[S2P(OnPr)2]22 (2), was prepared using homoleptic ligand. Similar to the prediction by Teo et al., the four icosahedra are assembled in a tetrahedral manner, which is reminiscent of tetrahedrane, to form the [(IrH2)4Ag42]14+ core passivated by [Ag8{S2P(OnPr)2}22]14–. Unlike previous studies that used M13 units, this study uniquely utilizes four (IrH2)@Ag12 units sharing six vertices to achieve the tetra-icosahedral kernel. The discovery of this 3D supercluster can more effectively help us understanding the growing process from nanoclusters to nanoparticles.
SN  - 0002-7863
SN  - 1520-5126
SN  - 1943-2984
ER  -