Matrix isolation studies of the reactions of silicon atoms with molecular hydrogen: the infrared spectrum of silylene

Silicon spontaneously inserts into the H–H bond of molecular hydrogen to form silylene in solid argon at 10 K. Infrared frequencies for the three fundamental modes of SiH2, SiHD, and SiD2 have been measured. The band assignments in the present study are totally different from those reported from a p...

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Bibliographic Details
Published in:The Journal of chemical physics 1985-01, Vol.82 (8), p.3542-3545
Main Authors: FREDIN, L, HAUGE, R. H, KAFAFI, Z. H, MARGRAVE, J. L
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Exact sciences and technology
Infrared spectra
Molecular properties and interactions with photons
Molecular spectra
Physics
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Summary:Silicon spontaneously inserts into the H–H bond of molecular hydrogen to form silylene in solid argon at 10 K. Infrared frequencies for the three fundamental modes of SiH2, SiHD, and SiD2 have been measured. The band assignments in the present study are totally different from those reported from a previous vacuum-ultraviolet photolysis study of SiH4. Silylene, formed from the molecular hydrogen reaction with silicon, reacts further with a second hydrogen molecule to give SiH4. The force field of SiH2 has been determined through normal coordinate analysis. Thermodynamic functions have also been calculated for this triatomic molecule.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.448933