Chemiluminescent reaction of oxygen atoms with dimethyl disulfide and dimethyl sulfide

Abstract

Broad chemiluminescence spectra in the range 240–460 nm with a sharp peak at 308.5 nm are obtained from the reaction between oxygen atoms [O(³P)] with dimethyl disulfide (DMDS) and dimethyl sulfide (DMS). The emitting species are identified as OH (A²Σ⁺) and SO₂(³B, ¹B). The photon yields are found to be 3.3 × 10^–6 and 4.4 × 10^–6 for DMDS and DMS, respectively. Computer simulations were carried out to elucidate the reaction mechanism.