Au(20) nanocluster protected by hemilabile phosphines |
| |
| Authors: | Xian-Kai Wan Zhi-Wei Lin Quan-Ming Wang |
| |
| Institution: | State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen, Fujian 361005, P. R. China. |
| |
| 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. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
