Theoretical study of the po-tential energy surface and the highly excited rovibra-tional spectroscopy of H_2S molecule

This note reports the potential energy surface of H2S that has been refined by using SCF-CI approach and the high-resolution experimental data. The calculated splitting values of the local mode vibration states pair close to observed values. This vibration state calculation has shown that there are no obvious non-Born Oppenheimer effects occurring in the lower vibration states of the system.