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Title: Spectroscopic investigation of the Ã [sup 1]A[sup ʺ]-X̃ [sup 1]A[sup ʹ] electronic transition of HSiNCO
Authors: Dover, Matthew Richard
Evans, Corey J.
Western, Colin M.
First Published: 22-Sep-2009
Publisher: American Institute of Physics
Citation: Journal of Chemical Physics, 2009, 131 (12), 4302.
Abstract: The first spectroscopic observation of the previously unknown species HSiNCO has been reported. HSiNCO was generated by the fragmentation of trimethylsilylisocyanate with a high-voltage discharge source. The 0[sup 0, sub 0] band of the Ã [sup 1]A[sup ʺ]-X̃ [sup 1]A[sup ʹ] transition has been recorded with full rotational resolution using laser-induced fluorescence spectroscopy and ground and excited state rotational and centrifugal distortion constants determined. Ten additional vibrational bands belonging to HSiNCO have also been observed in the laser-induced fluorescence spectrum and have been assigned based on predicted anharmonic vibrational frequencies. Due to the large change in geometry upon excitation, a number of axis-rotation peaks have been observed in the 0 [sup 0, sub 0] band and the axis-rotation angle (θ [sub T]) has been estimated to be 0.6°±0.2°. Dispersed fluorescence spectroscopy has been carried out and ν[sub 8] (the N–C–O out-of-plane bending mode) and a number of overtones of ν[sub 4] (the Si–H wagging mode) have been observed in the ground electronic state.
DOI Link: 10.1063/1.3224128
ISSN: 0021-9606
Type: Article
Rights: The following article appeared in Journal of Chemical Physics, 2009, 131 (12), 4302 and may be found at Copyright 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. Doi: 10.1063/1.3224128
Appears in Collections:Published Articles, Dept. of Chemistry

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