Study of the vibrational spectra of SO2, H2O18 and D2O16 using the U(4) algebraic model

Using the U(4) algebraic model, in this work we report a study of the vibrational spectra of SO2, H2018 and D2O16. The inclusion of intermode couplings in algebraic models has been stated to give a deep insight into detailed spectroscopy for these bent XY2 molecules. Improved set of algebraic parameters has been reported to provide improved RMS deviations for these molecules.