A REANALYSIS OF THE (010), (020), (100), AND (001) ROTATIONAL LEVELS OF (SO2)-S-32-O-16

Using high-resolution infrared spectra, a reanalysis of the ν2, 2ν2 - ν2, ν1, and ν3 bands of 32S 16O2 has been performed. These infrared data, combined with the available heterodyne and microwave data, were fitted within their respective experimental accuracies. For the (010) levels it was sufficient to use a Watson-type Hamiltonian, whereas it proved necessary to consider explicitly interaction terms for the ((020)(100)(001)) states. More precisely a ΔK = 2 quadratic distortion-correction to the Fermi interaction term was used to treat the interactions between (020) and (100) and a ΔK = 3 Coriolis-type term to treat the interactions between (100) and (001). © 1993 Academic Press, Inc.