FTIR spectrum of hydrogen sulfide between 9995 and 10,310 cm−1

Abstract

Fourier transform absorption spectrum of H2S molecule in the 9995–10,310 cm−1 spectral region from [Bykov A, Naumenko O, Smirnov M, Sinitsa L, Brown L, Crisp J, Crisp D. Can. J. Phys 1994; 72:989] has been theoretically assigned and modeled in the frame of the effective Hamiltonian approach. A set of 205 experimental energy levels has been derived for the (004) and (103) vibrational states at 10,188.303 and 10,194.445 cm−1, respectively. These levels have been reproduced with the root mean square deviation of 0.004 cm−1 by the fitting of 28 parameters of the Watson-type rotational Hamiltonian, as well as resonance parameters accounting for the Coriolis- and Fermi- type resonance interactions between (004) and (103) “bright” states, and (400) “dark” state at 10,292.536 cm−1. Detailed comparison of the experimental line position and intensities with recent variational calculations is presented.