Reactions amidogen

The rate constants shown are those at 298 K recommended by Atkinson et al. (1997a, 1997b). At concentrations of NO and N02 of 1 ppb, respectively, and of 03 of 100 ppb, which might be found in moderately polluted atmospheres, the lifetime of NH2 with respect to reaction with 02 is > 30 s and those with respect to reaction with NO, N02, and 03 are about 2-3 s. It appears likely, therefore, that the amidogen radical, NH2, once formed, will not react with 02 as one might expect at first glance, but rather with other atmospheric constituents. 

D. J. Donaldson, J. J. Sloan, and J. D. Goddard,/. Chem. Phys., 82, 4524 (1985). Energy Partitioning in Atom-Radical Reactions The Reaction of Fluorine Atoms with Amidogen [Pg.299]

The essential difference between the mechanisms proposed by Husain and Nor-rish and by Takeyama and Miyama is the presumed result of the attack of amidogen, NH2, by O2. Husain and Norrish proposed the reaction... 

The kinetics of the self-reaction of amidogen radicals, NH2 + NH2, has been studied extensively using different techniques and bath-gases.228 239 The apparent bimolecular rate constant was found to be strongly pressure dependent. The amidogen radicals can recombine or disproportionate ... 

The reaction between amidogen and hydroxyl radicals was found to be a key reaction in the modeling of thermal De-NOx reaction kinetics.8 However, there were no direct measurements of the kinetics of the reaction NH2 + OH until the experiments performed by Fagerstrom et al.22s The following parallel reaction channels were taken into account in describing the reaction kinetics... 

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