Journal of Physical Chemistry p. 7114 - 7119 (1990)
Update date:2022-08-22
Topics:
Lazarou, Yannis G.
Papagiannakopoulos, Panos
The infrared multiphoton dissociation of dimethylnitramine in the gas phase by a pulsed CO2 laser has been studied in order to elucidate its photochemical decomposition mechanism under collisionless conditions and provide a qualitative understanding of the consequent chemical mechanism that leads to the final products.The experimentally determined steady-state rate coefficient for the unimolecular decomposition of dimethylnitramine was found to be k(st) = 105.5+/-0.1 (I/MW cm-2)s-1 for laser intensities 2-10 MW cm-2.Scavenging experiments with Cl2, NOCl, NO,NO2, and (CD3)2NNO2 molecules have shown that the decomposition dynamics proceeds through scission of the N-NO2 bond, with no evidence of the HONO elimination or the isomerization to nitro-nitrite channel.Dimethylnitrosamine was the major final product which was mainly produced through oxidation of dimethylamino radical by dimethylnitramine.
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