Колебательно-вращательная спектроскопия высокого разрешения полосы v2+v3 молекулы метилхлорида CH3Cl: энергетическая структура и абсолютные интенсивности линий

Abstract

In this paper, the position of the lines, the energy structure and the absolute line strengths of the 12CH3 35Cl molecule in the absorption region of the band ν2 + ν3 are analyzed. High resolution infrared spectra, used for the analysis, were recorded with the Zurich prototype ZP2001 (Bruker IFS125 HR) Fourier transform interferometer at a resolution of 0.001 cm−1 in the region of 1900-2300 cm−1. Finding the position of lines was made with the derived Hamiltonian which takes into account different types of ro-vibrational effects in the C3v−symmetry molecule. Absolute strengths of 275 lines were obtained from the fit of their shapes both with the Hartmann-Tran profile. The positions of 294 lines were obtained by the method of combinational differences