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- W3044863256 abstract "We report the X-ray crystal structure of the Au30–xAgx(S-tBu)18 alloy and the effect of the ligand on alloying site preferences. Gold–silver nanoalloys prepared by co-reduction of metal salts are known to have only partial Ag occupancies. Interestingly, Au30–xAgx(S-tBu)18 has 100% Ag occupancy at two sites on the core surface as well as partial Ag occupancies on the surface, capping, and staples sites. The Au30–xAgx(S-tBu)18 (x = 1–5) composition was confirmed by X-ray diffraction and electrospray ionization mass spectrometry studies. Thiolate ligands can be categorized into three classes on the basis of the groups at the α-position as aliphatic, aromatic, and bulky thiols. The effect of the ligand on Ag doping can be clearly seen in the crystal structures of Au36–xAgx(SPh-tBu)24 and Au38–xAgx(SCH2CH2Ph)24 when compared with that of Au30–xAgx(S-tBu)18. Ag is preferentially doped onto the core surface when the ligand is aliphatic, and Ag is doped in both core surface and staple metal sites when the ligand is aromatic or bulky." @default.
- W3044863256 created "2020-07-29" @default.
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- W3044863256 date "2020-07-23" @default.
- W3044863256 modified "2023-10-16" @default.
- W3044863256 title "Crystal Structure of Au<sub>30–<i>x</i></sub>Ag<sub><i>x</i></sub>(S-<i>t</i>Bu)<sub>18</sub> and Effect of the Ligand on Ag Alloying in Gold Nanomolecules" @default.
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- W3044863256 doi "https://doi.org/10.1021/acs.jpclett.0c01330" @default.
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