Reaction of NH[sub 2] with O

The reaction between atomic oxygen and the amidogen radical, NH[sub 2], has been studied at 295 K by infrared kinetic spectroscopy. The NH[sub 2] radical was produced by excimer laser photolysis of NH[sub 3] at 193 nm and reacted with O atoms produced by a microwave discharge of dilute O[sub 2]/He m...

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Bibliographic Details
Published in:Journal of physical chemistry (1952) 1994-06, Vol.98:22
Main Authors: Adamson, J.D., Farhat, S.K., Morter, C.L., Glass, G.P., Curl, R.F., Phillips, L.F.
Format: Article
Language:English
Subjects:
400102 > Chemical & Spectral Procedures
400500 > Photochemistry
AMMONIA
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
EXCIMER LASERS
FLUIDS
GAS LASERS
GASES
HELIUM
HYDRIDES
HYDROGEN COMPOUNDS
INFRARED SPECTRA
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
KINETICS
LASERS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
OXYGEN
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
RADICALS
RARE GASES
REACTION KINETICS
SPECTRA 400201 > Chemical & Physicochemical Properties
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Summary:The reaction between atomic oxygen and the amidogen radical, NH[sub 2], has been studied at 295 K by infrared kinetic spectroscopy. The NH[sub 2] radical was produced by excimer laser photolysis of NH[sub 3] at 193 nm and reacted with O atoms produced by a microwave discharge of dilute O[sub 2]/He mixtures. IR transient absorptions of NH[sub 2], and of NH and OH radicals formed as reaction intermediates, were monitored using a tunable infrared color-center laser. The room-temperature rate constant for the overall reaction was measured as (6.5 [+-] 1.3) x 10[sup [minus]11] cm[sup 3] molecule[sup [minus]1] s[sup [minus]1]. The minor channel leading to NH + OH was observed but accounted for at most about 8% of the NH[sub 2] reacting. The rate constant for the reaction NH + O was determined from fitting the NH time profile to be (6.6 [+-] 1.5) x 10[sup [minus]11] cm[sup 3] molecule[sup [minus]1] s[sup [minus]1]. 24 refs., 5 figs., 1 tab.
ISSN:0022-3654
1541-5740
DOI:10.1021/j100073a016