An Analysis of Vibrations and Rotations in the First Hydrogen Sulfide Hexade: the 4 nu(2H2S)-S-32 Band

摘要

The infrared spectrum of the H2S molecule is recorded using a Bruker IFS 125HR Fourier transform spectrometer and studied in the range of 4500-5000 cm(-1), in which the first hexad of bands of interacting states of the hydrogen sulfide molecule is located (in this particular case, weak band 4 nu(2) is studied). Four hundred transitions with maximum quantum numbers of J(max) = 17 and K-a(max) = 8 are assigned in the experimental spectrum. These transitions correspond to one hundred thirty two upper vibration-rotation energy levels. The obtained data are analyzed using Watson's model of the effective Hamiltonian. By solving the inverse spectroscopic problem, a set of twenty eight spectroscopic parameters was obtained, which reproduces the initial experimental data with a standard deviation of d(rms) = 3.5 x 10(-4) cm(-1).