On the Structure of Thiolate-Protected Au25

著者: Jaakko Akola, Michael Walter, Robert L. Whetten, Hannu Häkkinen, Henrik Grönbeck - Journal of the American Chemical Society 2008 被引用: 726

Density functional theory is used to explore the structure of Au25(RS)18. The preferred structure consists of an icosahedral Au13 core protected by 6 RS-Au-RS-Au-RS units. The enhanced stability of the structure as an anion is found to originate from closure of an eight-electron shell for delocalized Au(6s) electrons. The evaluated XRD pattern and optical spectra are in good agreement with experimental data.