CHEMILUMINESCENCE STUDIES OF THE REACTION BETWEEN O(P-3) ATOMS AND METHYL-IODIDE

The reaction between O(P-3) atoms and CH3I was studied in a fast discharge-flow system. A threshold behavior with respect to the ratio of initial reactant concentrations in the chemiluminescence due to I-2 ((BII0+u)-I-2-->X(1) Sigma(g)(+)) was observed. The reactions in Chart 1 were considered significant in our interpretation. Fitting of temporal profiles produced an order of magnitude for k(1) of 10(10) cm(3) mol(-1) s(-1) at room temperature. Chemiluminescence from OH(A(2) Sigma-->X(2)II)((0,0)), OH(X)((2-->1,1-->0)), CO(X)((1-->0)), and CO2(X)((upsilon 3=1-->0)) was also observed, in common with observations of O(P-3) reactions with hydrocarbons.