Анализ колебательно-вращательтного спектра высокого разрешения в полосе v2 диоксида серы

Abstract

Present work is a continuation of our extensive high resolution study sulfur dioxide. Ro-vibrational spectrum of the {32}SO[2] molecule has been recorded in the region of 400-700 cm{-1} where the hybrid v2 band is located. The Ground State Combination Differences method is used for the spectra assignment. The subsequent weighted fit of experimentally assigned transitions was made with the Watson Hamiltonian. A set of 33 parameters is obtained which reproduces the initial 500 infrared ro-vibrational energy values from more than 3000 experimental lines with a root mean square deviation drms=1.5·10-4 cm{-1}. The obtained set of spectroscopic parameters allows us to reproduce experimental data with the mean accuracy, comparable with the experimental uncertainty in line position.