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Title: Spectroscopic investigation of the A (1)A(")-X (1)A(') electronic transition of HSiNCO.
Authors: Dover, MR
Evans, CJ
Western, CM
First Published: 28-Sep-2009
Citation: J CHEM PHYS, 2009, 131 (12), pp. 124302-124302
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(0)(0) band of the A (1)A(")-X (1)A(') 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(0)(0) band and the axis-rotation angle (theta(T)) has been estimated to be 0.6 degrees +/-0.2 degrees. Dispersed fluorescence spectroscopy has been carried out and nu(8) (the N-C-O out-of-plane bending mode) and a number of overtones of nu(4) (the Si-H wagging mode) have been observed in the ground electronic state.
DOI Link: 10.1063/1.3224128
eISSN: 1089-7690
Type: Journal Article
Appears in Collections:Published Articles, Dept. of Chemistry

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