Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 34, Pages 9826-9829Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201502667
Keywords
body-centered cubic; gold; nanoclusters; structure elucidation
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Funding
- Air Force Office of Scientific Research under AFOSR Award [FA9550-15-1-9999, FA9550-15-1-0154]
- MEXT [25288012]
- China Scholarship Council
- National Natural Science Foundation of China [21071058]
- Grants-in-Aid for Scientific Research [25288012] Funding Source: KAKEN
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The structure of nanoparticles plays a critical role in dictating their material properties. Gold is well known to adopt face-centered cubic (fcc) structure. Herein we report the first observation of a body-centered cubic (bcc) gold nanocluster composed of 38 gold atoms protected by 20 adamantanethiolate ligands and two sulfido atoms ([Au38S2(SR)(20)], where R=C10H15) as revealed by single-crystal X-ray crystallography. This bcc structure is in striking contrast with the fcc structure of bulk gold and conventional Au nanoparticles, as well as the bi-icosahedral structure of [Au-38(SCH2CH2Ph)(24)]. The bcc nanocluster has a distinct HOMO-LUMO gap of ca. 1.5 eV, much larger than the gap (0.9 eV) of the bi-icosahedral [Au-38(SCH2CH2Ph)(24)]. The unique structure of the bcc gold nanocluster may be promising in catalytic applications.
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