Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 135, Issue 49, Pages 18264-18267Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja409177s
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Funding
- MEXT program Elements Strategy Initiative to Form Core Rersearch Center from the Ministry of Education Culture, Sports, Science and Technology (MEXT) of Japan
- Air Force Office of Scientific Research [FA9550-11-1-9999 (FA9550-11-1-0147)]
- [25288012]
- Grants-in-Aid for Scientific Research [25288012] Funding Source: KAKEN
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We report the X-ray structure of a cyclohexanethiolate-capped [Au-23(SR)(16)](-) nanocluster (counterion: tetraoctylammonium, TOA(+)). The structure comprises a cuboctahedron-based bipyramidal Au-15 kernel, which is protected by two staple-like trimeric Au-3(SR)(4) motifs, two monomeric Au(SR)(2) and four plain bridging SR ligands. Electronic structure analysis reveals nonsuperatomic feature of [Au-23(SR)(16)](-) and confirms the Au-15 kernel and surface motifs. The Au-15 kernel and trimeric staple motif are unprecedented and offer new insight in understanding the structure evolution of gold nanoclusters.
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