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. 2016 Jan 18;7:10414. doi: 10.1038/ncomms10414

Figure 1. Geometric structures of Aun(SR)m samples.

Figure 1

(a) Au–S framework of Au25(SR)18 determined by single crystallography22, (b) Au–S framework of Au38(SR)24 determined by single crystallography23 and (c) Au–S framework of Au144(SR)60 predicted by density functional theory calculation (ref. 24). AuC, AuS and AuO represent Au atoms bonded only to Au atoms, those bonded both to Au and S atoms, and those bridged by two S atoms, respectively for Au25(SR)18 and Au38(SR)24. The definition of AuC, AuS, and AuO for Au144(SR)60 is given in the text. R is omitted for simplicity.