High resolution FTIR study of (SO2)-S-34-O-16: The bands 2 nu(1), nu(1) + nu(3), nu(1), nu(2) + nu(3) - nu(2) and nu(1), nu(2) + nu(3)

摘要

The high resolution infrared spectra of the (SO2)-S-34-O-16 molecule were recorded in the region of location of the 2 nu(1) and nu(1)+nu(3) bands. The hot band nu(1)+nu(2)+nu(3)-nu(2), which is located in the same spectral region, and the very weak band nu(1)+nu(2)+nu(3) were also recorded and theoretically analyzed. Considerably more transitions, compared to the preceding studies, were assigned to the nu(1) + nu(3) and nu(1)+nu(2)+nu(3)-nu(2) bands. For the 2 nu(1) band more than 3280 transitions were assigned in the recorded spectra (only 16 transitions belonging to the 2 nu(1) band have been mentioned in the earlier literature). Ro-vibrational energies of the states (200), (101) and (111) were determined on the basis of the assigned transitions and then were used in the weighted fit procedure with the Hamiltonian model which takes into account the presence of resonance interactions: The obtained sets of parameters reproduce the initial experimental data with the accuracies close to experimental uncertainties. (C) 2015 Elsevier Ltd. All rights reserved.