Abstract
Nitrous oxide (N2O) is currently the most important ozone-depleting substance emission and is a potent greenhouse gas. It is also a remarkably unreactive chemical species. Any loss processes for N2O in the troposphere and combustion can be important. Therefore, as part of an effort to investigate how N2O reacts with prototypical chemical species, its reaction with singlet methylene (CH2) is studied here using high accuracy thermochemistry mHEAT-345(Q) calculations, together with two-dimensional (E,J) master equation simulations. Two distinct mechanisms (an addition/elimination and an O-abstraction) have been characterized. The reaction is found to be very fast with a negative temperature dependence.
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