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Products and mechanisms for the gas-phase reactions of NO(3) radicals with a series of alkenes in air have been studied. The experiments with propene, isobutene, trans- and cis-2-butene, 2-methyl-2-butene and 2,3-dimethyl-2-butene were carried out at 295 +/- 2 K and 740 +/- 5 Torr in a 480-L Teflon-coated reaction chamber, where NO(3) was generated by the thermal dissociation of N(2)O(5). Reactants and products were observed to produce nitroxy-nitroperoxy intermediates that decayed with formation of carbonyl, nitroxycarbonyl, nitroxy alcohol and dinitrate species. The product distribution was found to be dependent on the alkyl substitution pattern around the double bond. Evidence was also found of a reaction between NO(3) and organic peroxy radicals with a constant rate, measured in the case of the 2,3-dimethyl-2-nitroxy-3-peroxybutane radical to be of the order of 5 x 1.0 E-12 cm3/molecule/s.

Additional information

Authors: HJORTH J, JRC Ispra (IT);LOHSE C, JRC Ispra (IT);NIELSEN C J, JRC Ispra (IT);SKOV H, JRC Ispra (IT);RESTELLI G, JRC Ispra (IT)
Bibliographic Reference: Article: The Journal of Physical Chemistry, Vol. 94 (1990) No. 19, pp. 7494-7500
Record Number: 199011824 / Last updated on: 1994-12-02
Original language: en
Available languages: en