The reaction of nitromethane with hydrogen and deuterium atoms in the gas phase. A mechanistic study

E. Lund Thomsen, O.J. Nielsen, H. Egsgaard

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    The mechanism of the reaction between H and CH3NO2, has been studied in a discharge flow system using electron paramagnetic resonance and modulated molecular beam mass spectrometry for the detection of reactants and products. Deuterium atoms have, in addition to CD3NO2, been used to support the proposed reaction mechanism. The reaction was studied with the atomic reactant in slight excess at 298 K and a total pressure of 2 Torr. Two concurrent reaction channels: (1a) H+CH3NO2-->HONO+.CH3 and (1b) H+CH3NO2-->CH3NO+.OH were observed. The branching ratio, k1a/(k1a+k1b), is 0.7+/-0.2.
    Original languageEnglish
    JournalChemical Physics Letters
    Issue number1-3
    Pages (from-to)257-263
    Publication statusPublished - 1993

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