Absolute rate parameters for the reaction of ground state atomic oxygen with carbonyl sulfide

Abstract

The rate parameters for the reaction of O(³P) with carbonyl sulfide, O(³P) + OCS → CO + SO, (1) have been determined directly by monitoring O(³P) using the flash photolysis‐resonance fluorescence technique. The value for k₁ was measured over a temperature range of 263–502°K and the data were fitted to an Arrhenius expression with good linearity, k₁ = (1.65±0.13)×10⁻¹¹ exp(−4305±55/R T) cm³ molecule⁻¹·sec⁻¹. A comparison of the present results with those from previous studies of Reaction (1) is also presented.