Investigation of the ro-vibrational energy structure of (0101, F1) and (0101, F2) states of 28SiH4 molecule
N.I. Raspopova
National Research Tomsk Polytechnic University, 30, Lenin Avenue, Tomsk, 634050, Russia
Keywords: деформационные колебания, обертоны, тетраэдрические расщепления, резонансные взаимодействия, bending vibrations, overtones, tetrahedral splittings, resonance interactions
Abstract
The high-resolution analysis of the ro-vibrational IR spectrum of the absorption bending bands n2 + n4 (F1) and n2 + n4 (F2) of the 28SiH4 molecule is performed with the SPHETOM software package. About 618 experimental transitions are assigned to n2 + n4 (F1) and n2 + n4 (F2) bands with Jmax = 8. Rotational, centrifugal distortion, tetrahedral splitting, and resonance interaction parameters for these vibrational bands are determined from the weighted fit of experimental line positions. The obtained set of parameters reproduces the initial experimental data with the accuracy closed to experimental uncertainties, drms = 8 × 10-4 cm-1.
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