92285-17-1Relevant articles and documents
Mechanism of Photooxidation of Glyoxal and Formaldehyde in Solid O2 at 12-18 K
Tso, Tai-Ly,Lee, Edward K. C.
, p. 5465 - 5474 (1984)
The UV photoxidation of solid O2/trans-H2C2O2 samples at 12-18 K gives diformylperoxyl, 2, as the most important primary product (via facile intermediacy of HCO radicals) and *2CO as an important secondary photolysis product.Degradation of these products gives HC(O)OO*CO, HCOOH*COx, H2O2*2CO, H2O*CO2, CO, and CO3.A 30 K warm-up generates H2O2*2CO from 2*2CO by thermal decomposition.The photooxidation of the solid O2/H2C2O2 system is driven less to completion than the photooxidation of the solid O2/H2CO system; because the latter system has more free radical species through the H atom recoil in the H2CO photolysis, the H atoms escape from the photolysis cage and hence a significant change in the photolysis cage stoichiometry occurs.