| Literature DB >> 26263140 |
Yong Pei1, Jian Tang2, Xianqiong Tang1, Yunqing Huang2, Xiao Cheng Zeng3.
Abstract
The study of atomic structure of thiolate-protected gold with decreased core size is important to explore the structural evolution from Au(I) complex to Au nanoclusters. In this work, we theoretically predicted the structure of recently synthesized four valence electron (4e) Au22(SR)18 cluster. The Au22(SR)18 cluster is proposed to possess a bitetrahedron Au7 kernel that is surrounded by a unique [Au6(SR)6] Au(I) complex and three Au3(SR)4 staple motifs. More interestingly, the Au22(SR)18 exhibits structural connections with Au24(SR)20 and Au20(SR)16. The stability of Au22(SR)18 can be understood from the superatom electronic configuration of the Au kernel as well as the formation of superatomic network. The present study can offer new insight into the structural evolution as well as electronic structure of thiolate-protected Au nanoclusters.Entities:
Keywords: density functional theory (DFT); electronic structure; structural evolution; superatom network; thiolated gold cluster
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Year: 2015 PMID： 26263140 DOI： 10.1021/acs.jpclett.5b00364
Source DB: PubMed Journal: J Phys Chem Lett ISSN： 1948-7185 Impact factor: 6.475