Vibrational spectra of small silicon monoxide cluster cations measured by infrared multiple photon dissociation spectroscopy

文献情報

出版日 2008-01-30

DOI 10.1039/B716627C

インパクトファクター 3.676

著者

Etienne Garand, Daniel Goebbert, Gabriele Santambrogio, Ewald Janssens, Peter Lievens, Gerard Meijer, Knut R. Asmis

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要旨

The first gas-phase infrared spectra of silicon monoxide cations (SiO)n+, n = 3–5, using multiple photon dissociation in the 550–1250 cm−1 frequency range, are reported. All clusters studied here fragment via loss of a neutral SiO unit. The experimental spectra are compared to simulated linear absorption spectra from calculated low energy isomers for each cluster. This analysis indicates that a “ring” isomer is the primary contributor to the (SiO)3+ spectrum, that the (SiO)4+ spectrum results from two close-lying bicyclic ring isomers, and that the (SiO)5+ spectrum is from a bicyclic ring with a central, fourfold-coordinated Si atom. Experiment and theory indicate that the energies and energetic orderings of (SiO)n+ isomers differ from those for neutral (SiO)n clusters.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

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