Elementary reactions of the SCl radical. Part 2.—Rate constants and mechanisms of the reactions of SCl with NO2, NO, O2, O(3P) and N (4S)

Abstract

Rate constants for the reactions of SCl radicals with NO₂, NO, O₂, O(³P) and N(⁴S) have been determined at 293 ± 2 K in a discharge-flow system using mass-spectrometric detection. The following results were obtained, with values of k in units of cm³ molecule^–1s^–1: SCl + NO₂→ OSCl + NO;k₁=(2.34 ± 0.12)×10^–11(1), SCl + NO → products; k₂ < 1× 10^–14(2), SCl + O₂→ products; k₃⩽ 2×10^–14(3), SCl + O(³P)→ So + Cl; k₄=(1.2 ± 0.4)× 10^–10(4), SCl + N(⁴S)→ NS + Cl;k₅=(3.9 ± 1.1)× 10^–11.(5)

The results are compared to those obtained for analogous reactions of SF, SH and CIO radicals.