Determination of the Rate Constant for the Radical−Radical Reaction CN(X2Σ+) + OH(X2Π) at 292 K

This is the authors' abstract. We don't add key points for this paper.

The rate constant for the reaction of the cyano radical, CN(X 2 Σ), with the hydroxyl radical, OH(X 2 Π), has been measured to be (1.4 ± 0.48) × 10 -10 cm 3 molecule -1 s -1 at a temperature of 292 ± 2 K. The error estimate includes both systematic and random error at the level of one standard deviation. The measurements were carried out by simultaneously monitoring the temporal dependencies of the CN and OH radical concentrations on the same photolytic laser pulse that created the transient species. The rate constant was determined by two independent methods of data analysis: one based on the simulation of CN and OH concentration profiles using a detailed kinetic mechanism and the other based on a new integrated-profiles analysis ( Int. J. Chem. Kinet. 1998, 30, 47).