Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 10, Pages 3140-3144Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201410161
Keywords
gold; nanoclusters; structure elucidation; sulfur ligands
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Funding
- 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
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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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