期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 10, 页码 3140-3144出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201410161
关键词
gold; nanoclusters; structure elucidation; sulfur ligands
资金
- U.S. Department of Energy-Office of Basic Energy Sciences [DE-FG02-12ER16354]
- MEXT (Japan) [25288012]
- ESICB
- Grants-in-Aid for Scientific Research [25288012] Funding Source: KAKEN
Unravelling the atomic structures of small gold clusters is the key to understanding the origin of metallic bonds and the nucleation of clusters from organometallic precursors. Herein we report the X-ray crystal structure of a charge-neutral [Au-18(SC6H11)(14)] cluster. This structure exhibits an unprecedented bi-octahedral (or hexagonal close packing) Au-9 kernel protected by staple-like motifs including one tetramer, one dimer, and three monomers. Until the present, the [Au-18(SC6H11)(14)] cluster is the smallest crystallographically characterized gold cluster protected by thiolates and provides important insight into the structural evolution with size. Theoretical calculations indicate charge transfer from surface to kernel for the HOMO-LUMO transition.
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