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Title: Structures of Silicon Cluster Cations in the Gas Phase
Authors: Lyon, Jonathan T ×
Gruene, Philipp
Fielicke, Andre
Meijer, Gerard
Janssens, Ewald
Claes, Pieterjan
Lievens, Peter #
Issue Date: Jan-2009
Publisher: Amer chemical soc
Series Title: Journal of the American Chemical Society vol:131 issue:3 pages:1115-1121
Abstract: We present gas-phase infrared spectra for small silicon cluster Cations possessing between 6 and 21 atoms. Infrared multiple photon dissociation (IR-MPD) of these clusters complexed with a xenon atom is employed to obtain their vibrational spectra. These vibrational spectra give for the first time experimental data capable of distinguishing the exact internal structures of the silicon cluster cations. By comparing the experimental spectra with theoretical predictions based on density functional theory (DFT), unambiguous structural assignments for most of the Si-n(+) clusters in this size range have been made. In particular, for Si-8(+) an edge-capped pentagonal bypriamid structure, hitherto not considered, was assigned. These structural assignments provide direct experimental evidence for a cluster growth motif starting with a pentagonal bipyramid building block and changing to a trigonal prism for larger clusters.
ISSN: 0002-7863
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
Physics and Astronomy - miscellaneous
× corresponding author
# (joint) last author

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