Table 2: Elementary steps in the NCN pathway of prompt NO formation. The forward reaction rate is given by [13].


1CH + N2 = NCN + H 0.022155
2CN + N2O = NCN + NO 0.015360
3CN + N2O = NCN + NO 0.01450
4CN + NCO = NCN + CO 0.00.0
5C2O + N2 = NCN + CO 0.017000
6CH + N2 = HNCN −3.6214196
7HNCN + M = H + NCN + M −3.4464502
8HNCN + O = NO + HCN 0.0573.5
9HNCN + O = NH + NCO 0.0573.5
10HNCN +O = CN + HNO 0.0573.5
11HNCN + OH = NCN + H2O 2.783135
12HNCN + O2 = HO2 + NCN 1.2824240
13NCN = N + CN −5.29117090
14NCN = C + N2 −5.2383110
15NCN = CNN −5.8478410
16NCN + H = HCN + N 0.08425
17NCN + O = CN + NO 0.15−34
18NCN + O = CO + N2 2.32−1135
19NCN + O = N + NCO 0.42−157
20NCN + N = N2 + CN 0.00.0
21NCN + C = CN + CN 0.00.0
22NCN + OH = HCN + NO −0.977290
23NCN + OH = HCN + NO 0.444000
24NCN + O2 = NO + NCO 0.5124590
25NCN + CH = HCNCN 0.0−860
26NCN + CN = C2N2 + N 0.08020
27NCN + CH2 = H2CN + CN 0.04630