Kinetic and Theoretical Studies of the Reactions CH3C(0)02 + N02 + M *e CH3C(0)02N02 + M between 248 and 393 K and between 30 and 760 Torr

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Kinetics and Products of theGas-phase Reactions of (CH,),Si, (CH , ) ,S i CH .OH, (CH , ) ,S i 0 s i (CH , ) , and (C D , ) ,S i 0 s i (C D , ) , with

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The kinetics of the gas-phase reaction of the NO3 radical with naphthalene have been investigated at 150 torr 0 2 + 590 torr Nz and 600 torr 0 2 + 140 torr Nz at 298 ? 2 K. Relative rate measurements were carried out in reacting NO3 -N205-naphthalene-propene-02 -Nz mixtures by longpath Fourier transform infrared absorption spectroscopy. A rate constant ratio for the reactions of 0 2 and NO2 with the NOS-naphthalene adduct of ko2/kNo2 < 4 X was obtained from the competition between 0 2 and NO2 for reaction with the NOS-naphthalene adduct and thermal decomposition of the adduct back to reactants. Atmospheric pressure ionization MS/MS measurements of the nitronaphthalene products of the NO3 radical-initiated reaction of naphthalene are consistent with the proposed reaction mechanism, and the atmospheric implications of the data are discussed.