CH2OO Criegee biradical yields following photolysis of CH2I2 in O2

Abstract

Yields of CH₂OO and CH₂IO₂ from the reaction of CH₂I radicals with O₂ are reported as a function of total pressure, [N₂] and [O₂] at T = 295 K using three complementary methods. Results from the three methods are similar, with no observed additional dependence on [O₂]. The CH₂I + O₂ reaction has a yield of ∼18% CH₂OO at atmospheric pressure.