| Literature DB >> 22931402 |
Xian-Kai Wan1, Zhi-Wei Lin, Quan-Ming Wang.
Abstract
A novel phosphine-protected Au(20) nanocluster was isolated through the reduction of Au(PPhpy(2))Cl by NaBH(4) (PPhpy(2) = bis(2-pyridyl)-phenylphosphine). Its composition was determined to be [Au(20)(PPhpy(2))(10)Cl(4)]Cl(2), and single crystal X-ray structural analysis revealed that the Au(20) core can be viewed as being generated from the fusion of two Au(11) clusters via sharing two vertices. Optical absorption spectroscopy indicated this Au(20) has a large HOMO-LUMO gap (E(g) ≈ 2.24 eV). This is the first example of a ligand-protected gold nanocluster with a core generated from incomplete icosahedral Au(11) building units.Entities:
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Year: 2012 PMID： 22931402 DOI： 10.1021/ja307256b
Source DB: PubMed Journal: J Am Chem Soc ISSN： 0002-7863 Impact factor: 15.419