Structures of neutral Au7, Au19, and Au20 clusters in the gas phase

被引：498
作者：
Gruene, Philipp [1 ]
Rayner, David M. [2 ]
Redlich, Britta [3 ]
van der Meer, Alexander F. G. [3 ]
Lyon, Jonathan T. [1 ]
Meijer, Gerard [1 ]
Fielicke, Andre [1 ]
机构：
[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany
[2] Natl Res Council Canada, Steacie Inst Mol Sci, Ottawa, ON K1A 0R6, Canada
[3] Inst Plasma Phys Rijnhuizen, FOM, NL-3439 MN Nieuwegein, Netherlands
来源：
SCIENCE | 2008年 / 321卷 / 5889期
关键词：
D O I：
10.1126/science.1161166
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The catalytic properties of gold nanoparticles are determined by their electronic and geometric structures. We revealed the geometries of several small neutral gold clusters in the gas phase by using vibrational spectroscopy between 47 and 220 wavenumbers. A two- dimensional structure for neutral Au-7 and a pyramidal structure for neutral Au-20 can be unambiguously assigned. The reduction of the symmetry when a corner atom is cut from the tetrahedral Au-20 cluster is directly reflected in the vibrational spectrum of Au-19.
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页码：674 / 676
页数：3
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