Small Organic Peroxy Radicals – Table 11

Figure 9. Reactions 12/13 CH3C(O)O2 + NO/NO2

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Table 11: Rate constants for the reactions of CH3C(O)O2 with NO and NO2 at 760±20 Torr (N2 + O2 or air), unless otherwise stated.

Reference k(NO)a
298 K
k(NO2)a
298 K
k(NO)k(NO2) Aa E/R (K) Temp range(K) Method
Cox et al. (1976) 1.7 298 Relative
Cox and Roffey (1977) 1.8±0.4b 294-328 Relative
Hendry and Kenley (1977) 3.1b 298-318 Relative
Kirchner et al. (1990) 2.3±0.2b 314-321 Relative
Tuazon et al. (1991) 1.95±0.25b 283-313 Relative
Seefeld et al. (1997) 2.4±0.2b 247-298 Relative
Villalta and Howard (1996) 2.0±0.3c 0.81±0.13 -270±60 200-402 FT-MS
Maricq and Szente (1996) 1.4±0.2d 0.21 +1.4-0.8 -570±140 230-354 LP
Moise et al. (1999) 1.8±0.3 0.60±0.11 -320±40 218-370 FT-MS
Sehested et al. (1998) 2.0±0.3 1.0±0.2 2.07±0.21 298243-295 PRRelative
Addison et al. (1980) 0.47±0.03 298 MMS
Basco and Parmar (1987) 0.48±0.05 298 FP
Bridier et al. (1991) 0.96±0.09 0.21 -450 248-393 FP
Recommended 2.0±0.3 1.0±0.2e 2.0±0.3e 0.81f  
0.40e,g
-270e,h

a) Units of 10-11 cm3molecule-1s-1; b) Independent of temperature, within experimental uncertainties; c) Total pressure: 1-6 Torr (He); d) Total pressure: 100-120 Torr (N2+O2); e) At 760 Torr of N2 or air; f) For k(NO); g) For k(NO2); h) For both k(NO) and k(NO2), since their ratio has been shown to be temperature independent; the recommended value is from Bridier et al. FT-MS: Flow tube – mass spectrometry; LP: Laser-flash photolysis; PR: Pulse radiolysis; MMS: Molecular modulation spectrometry; FP: Flash photolysis.