Dynamics of the reaction of atomic oxygen with ethene: Observation of all carbon-containing products by single-photon ionization

We measured time-of-flight (TOF) spectra of products from the reaction O(3P/1D) + C2H4 at collision energy 6.4 kcal mol−1 using a quadrupole mass filter and tunable vacuum-ultraviolet light for ionization. All carbon-containing products from five exit channels – CH2CHO + H, CH2CO + H2, CH3 + HCO, CH2 + HCHO, and CH2CO + 2H – were identified. Product channels CH2CHO + H and CH2CO + 2H associate with 3P and 1D atomic oxygen reactants, respectively. Both 3P and 1D oxygen reactants might be responsible for the other reactions. The ionization threshold of nascent vinoxy radicals is 9.3 ± 0.1 eV.