The SO2F2 quasi-spherical top: Correspondence between tensorial and Watson’s formalisms

The SO2F2 quasi-spherical top molecule with C2v symmetry is considered as a distorted spherical top deriving from the SO2K 4 tetrahedral ion. We present here a detailed correspondence between the tensorial formalism using the TdIC2v reorientation and the usual Hamiltonian of Watson. We have also performed ab initio calculations in order to determine the centrifugal distorsion constants in the vibrational ground state. q 2005 Elsevier B.V. All rights reserved