Rates of hydroxyl radical reactions. Part 14. Rate constant and mechanism for the reaction of hydroxyl radical with formic acid

摘要: The rate constants for the reaction of OH with monomer and dimer formic acid have been determined at 296 K by a laser photolysis-resonance absorption technique. radicals were generated photolysis 222 nm KrCl excimer monitored time-resolved several resonance lines (0,0) band A/sup 2/..sigma../sup +/-X/sup 2/II transition. constant was found to be 2.95 x 10/sup 11/ cm/sup 3/ mol/sup -1/ s/sup -1/. is much less reactive. Experiments small amounts oxygen added indicate that H atoms are formed during reaction. results can interpreted as indicating significantly more abstraction hydrogen from -OH bond than -CH acid.