Kinetic and mechanistic study of the X and XO (X = Cl, Br) reactions with dimethyl sulfoxide
Abstract
The kinetics and mechanism of the reactions of dimethyl sulfoxide (DMSO) with Cl, Br, ClO and BrO have been studied by the mass spectrometric discharge-flow method at 298 K and at a total pressure of 1 Torr of helium. The rate coefficient of the reaction Cl + DMSO → products (1) was measured under pseudo-first-order conditions either in excess of DMSO or in excess of Cl atoms: k1 = (2.05 ± 0.35) × 10−11 cm3 molecule−1 s−1
(quoted uncertainty includes estimated systematic errors). Both HCl and CH3 were detected as products of