64709-75-7Relevant articles and documents
Gas-Phase Reactions of (CH3)2N Radicals with NO and NO2
Lazarou, Yannis G.,Kambanis, Kyriakos G.,Papagiannakopoulos, Panos
, p. 2110 - 2115 (1994)
The absolute rate constants for the reactions of (CH3)2N radicals with NO and NO2 were determined in the gas phase and at room temperature by using the very low pressure reactor (VLPR) technique.The rates were k(CH3)2N + NO = (8.53 +/- 1.42) x 1E-14 Cm3 molecule-1s-1 and k(CH3)2N + NO2 = (9.08 +/- 1.36) x 1E-13 cm3 molecule-1s-1.The reaction with NO2 proceeds via two competitive pathways: the recombination patway (CH3)2N + NO2 -> (CH3)2NNO2, with a rate constant k2a = (3.18 +/- 0.48) x 1E-13 cm3molecule-1s-1, and the oxidation patway (CH3)2N + NO2 -> (CH3)2NONO* -> (CH3)2NO + NO, with a rate constant k2b = (6.36 +/- 0.74) x 1E-13 cm3molecule-1s-1.The oxidation pathway is ca. 2.2 times faster than the recombination one, and the ratio k2a/k2b = 0.45 +/- 0.15.Conventional transition state theory analysis indicates that the involved transition states are loose, with the NN or bond lengths equal to ca. 2.5 Angstroem.