CHEMICAL REACTION JET SPECTROSCOPY OF THE $\tilde{A}^{1}A" - \tilde{X}^{1}A'$ 430 NM BAND SYSTEM OF HSiF
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Date
1995
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Publisher
Ohio State University
Abstract
Jet-cooled LIF spectra of the 430 nm band system of HSiF were obtained by the reaction of molecular fluorine with silane in the throat of a continuous supersonic jet. Vibrational analysis of the spectrum gave upper state harmonic vibrational frequencies of $\nu_{1} = 1549 cm^{-1}, \nu_{2} = 567 cm^{-1}$ and $\nu_{3} = 859 cm^{-1}$. Seven bands were recorded at high resolution and rotationally analyzed, providing excited state rotational constants. The upper state vibrational and rotational bending levels were fitted to a semi-rigid bender model to obtain the equilibrium geometry and barrier to linearity. These will be discussed in comparison with recent ab initio calculations of the excited state properties.
Description
Author Institution: University of Kentucky, Lexington, KY 40506-0055; University of New Brunswick, Fredriction, NB, Canada E3B 5A3