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À propos de : Synthesis of ω-Hydroxy Hexathiolate-Protected Subnanometric Gold Clusters        

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  • Synthesis of ω-Hydroxy Hexathiolate-Protected Subnanometric Gold Clusters
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  • The synthesis of ω-hydroxy hexathiolate-protected subnanometric gold clusters is described. Quantitative high-angle annular dark-field scanning transmission electron microscopy has been employed to determine atomic composition. The smallest particles observed contain 13 ± 2 Au atoms; all others contained multiples of this particle size. The UV−vis spectra show the bands of discrete electronic transitions for this core size. Chemical analyses indicate a composition of Au13(SC6OH)8 for the clusters. The role of the ligand shell in determining the core size is highlighted.
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