Rotational spectra, molecular structure, and dipole moment of methane sulfonyl fluoride

The rotational spectra of CH3SO2F and its C-13, S-33, S-34, and O-18 isotop omers in their vibrational ground states were investigated by molecular bea m Fourier transform microwave spectroscopy and millimeter wave spectroscopy in natural isotopic abundance, Accurate rotational, centrifugal distortion , and 33S quadrupole coupling constants have been derived. An effective mol ecular structure was determined from the experimental data and ab initio ca lculations. Also the dipole moment components have been determined. Moreove r, some lines belonging to vibrationally excited states have been identifie d and analyzed. (C) 2000 Elsevier Science B.V, All rights reserved.