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

Abstract

The rotational spectra of CH3SO2F and its 13C, 33S, 34S, and 18O isotopomers in their vibrational ground states were investigated by molecular beam 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 molecular structure was determined from the experimental data and ab initio calculations. Also the dipole moment components have been determined. Moreover, some lines belonging to vibrationally excited states have been identified and analyzed.