Trapping of the methyl cation by carbon monoxide; formation of acetic acid from methane

Abstract
The formation of acetic acid from methane, carbon monoxide, antimony pentafluoride, and water is reported, confirming the occurrence of the methyl cation (CH3 +) in the oligocondensation of methane and indicating that protonated methane (CH5 +) is not involved in this reaction.