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- Title
A Chiral Gold Nanocluster Au<sub>20</sub> Protected by Tetradentate Phosphine Ligands.
- Authors
Wan, Xian ‐ Kai; Yuan, Shang ‐ Fu; Lin, Zhi ‐ Wei; Wang, Quan ‐ Ming
- Abstract
The chirality of a gold nanocluster can be generated from either an intrinsically chiral inorganic core or an achiral inorganic core in a chiral environment. The first structural determination of a gold nanocluster containing an intrinsic chiral inorganic core is reported. The chiral gold nanocluster [Au20(PP3)4]Cl4 (PP3=tris(2-(diphenylphosphino)ethyl)phosphine) has been prepared by the reduction of a gold(I)-tetraphosphine precursor in dichloromethane solution. Single-crystal structural determination reveals that the cluster molecular structure has C3 symmetry. It consists of a Au20 core consolidated by four peripheral tetraphosphines. The Au20 core can be viewed as the combination of an icosahedral Au13 and a helical Y-shaped Au7 motif. The identity of this Au20 cluster is confirmed by ESI-MS. The chelation of multidentate phosphines enhances the stability of this Au20 cluster.
- Subjects
CHIRALITY; DICHLOROMETHANE; GOLD; CRYSTAL structure; MOLECULAR structure
- Publication
Angewandte Chemie, 2014, Vol 126, Issue 11, p2967
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201308599