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The gas phase reactions of hydroxyl radicals with a series of nitroalkanes over the temperature range 240-400 K

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Absolute rate constants were determined for the gas phase reactions of OH radicals with a series of nitroalkanes by the flash photolysis-resonance fluorescence technique. Experiments were performed at total pressures from 25 to 50 Torr using Ar as a diluent gas. Experiments with nitromethane and nitromethane-d3 at 296 K yielded rate constants of (1.58±0.09) × 10-14 and (0.9±0.04) × 10-14 cm3 molecule-1 s-1, respectively. Data from experiments over the temperature range 240-400 K for nitroethane, 1-nitropropane, 2-nitropropane, 1-nitrobutane, and 1-nitropentane were used to evaluate their Arrhenius parameters. The results are discussed in terms of the reaction mechanism, and are compared to previous literature data.

TidsskriftChemical Physics Letters
Udgave nummer6
Sider (fra-til)519-523
Antal sider5
StatusUdgivet - 13 apr. 1990

ID: 228197883