KINETICS, ENERGETICS AND OH PRODUCT YIELD OF THE REACTION CH3O plus O(3P) yields CH3O2 yields PRODUCTS.

Article abstract of DOI:10.1002/bbpc.19870910705

The rate constant for the reaction (1) CH//3O plus O yields products at 298 K has been determined using 248 nm laser co-photolysis of CH//3ONO/O//3 mixtures for the generation of CH//3O radicals and O atoms combined with LIF for time resolved detection of CH//3O and product OH. k//1 is found to be (2. 5 plus or minus 0. 7) 10** minus **1**1 cm**3/s. The results are shown to be consistent with a primary capture mechanism on an electronically adiabatic surface forming highly vibrationally excited CH//3O//2* and followed by rapid subsequent decomposition or isomerization. From modeling of the OH yield using RRKM theory the isomerization barrier between CH//3O//2 and CH//2OOH is placed near 160 kJ/mol in good agreement with recent ab initio calculations.