HIGH VIBRATIONAL OVERTONES IN $SiHCl_{3}$ AND $SiH_{2}Cl_{2}$
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Date
1983
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Publisher
Ohio State University
Abstract
Absorption spectra in the $12 000 cm^{-1}$ to $18 000 cm^{-1}$ range have been recorded for gaseous $SiHCl_{3}$ and $SiH_{2}Cl2$ using intracavity photoacoustic detection and CW dye lasers. The observed transitions correspond to the $\Delta$V = 6,7,8 and 9 overtones of the Si-H stretch and are adequately interpreted in terms of a local mode description of the vibration. Anharmonic constants of $35.0 cm^{-1}$ for $SiHCl_{3}$ and $34.4 cm^{-1}$ for $SiH_{2}Cl_{2}$ art found from a Birg-Sponer plot of the higher overtones. The band shape structures are consistence with parallel bands for $SiH_{2}Cl_{3}$ and a B/C hybrid for $SiH_{2}Cl_{2}$.
Description
Author Institution: Department of Chemistry, The Pennsylvania State University