The methyl fluoride—antimony pentafluoride complex
Abstract
It is shown by 19F and 1H n.m.r. spectroscopy that the complex MeF–SbF5 does not exist in solution in SO2, as the solvent is methylated with the formation of CH3OSO+, but it can be obtained in SO2F2 as a stable species which undergoes neither intramolecular nor inter-molecular exchange on the n.m.r. time scale.