Mechanism for the reaction of hydroxyl radicals with dimethyl disulfide

Strong infrared chemiluminescence from the reactions of OH and OD radicals with CH3SSCH3 was observed in a discharge flow reactor viewed by a Fourier transform spectrometer. The recorded spectra were identical to the H2O and HDO plus D2O emission spectra from the OH+CH3SH and OD+CH3SD reactions, respectively. These observations strongly suggest that the primary reaction in the OH and OD+CH3SSCH3 system generates CH3SH and CH3SD molecules with the observed emission arising from the OH+CH3SH and OD+CH3SD secondary reactions.