LOCAL MODE ROTATIONAL STRUCTURE IN THE (3000), (4000) AND (5000) STRETCHING OVERTONE BANDS OF SILANE: (1) EXPERIMENTS AND RESULTS
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Date
1990
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Publisher
Ohio State University
Abstract
The (3000), (4000) and (5000) stretching overtone bands of silane have been recorded on a BOHEM Fourier transfer spectrometer equipped by a multipass absorption cell, which had an effective length of up to 100 meters and was capable of holding the sample pressure almost constant over two days continuous scan. A symmetric top rotational structure, similar to that observed in the (3000) band of germane[1], was clearly demonstrated, indicating that the upper states were very near the local mode limit. The band origins agree well with the model vibrational calculation[2]. In addition, some interesting intensity anomalies and perturbations were found in these spectra and will be reported here
Description
[1] Q.Zhu. B.A.Thrush and A.G. Robiette: Chem. Phys. Lett., 150 (1988) p181 [2] H.S. Child and L.Halonen: Adv. Chem. Phys., 57 (1984) p1
Author Institution: Dalian Institute of Chemical Physics
Author Institution: Dalian Institute of Chemical Physics