IUPAC Subcommittee on Gas Kinetic Data Evaluation

Providing evaluated kinetic data on the web since 1999.

IUPAC Subcommittee on Gas Kinetic Data Evaluation

Website: http://www.iupac-kinetic.ch.cam.ac.uk/ See website for latest evaluated data. Datasheets can be downloaded for personal use only and must not be retransmitted or disseminated either electronically or in hardcopy without explicit written permission.

This datasheet last evaluated: 2002-03-09 ; last change in preferred values: 2002-03-09 ; last peer-reviewed publication: 2004-03-09


O + NO + MNO2 + M(1) Δ Hο = -306.2 kJ mol-1

Rate Coefficient Data: Low-pressure rate coefficients

Absolute Rate Coefficients

Rate Coefficient (k0) / Temperature / ReferenceTechniques and Comments
cm3molecule-1s-1Kelvin
1.55×10 -32 exp[(584 ± 35)/T] [N 2 ]217–250Whytock et al., 1976FP-RF
(1.18±0.15)×10 -31 (T/300) -1.82 [N 2 ]217-250
8.8×10 -32 (T/300) -1.44 [N 2 ]200–370Schieferstein et al., 1983FP-CL

Preferred Values

k0cm3molecule-1s-1{1.0-31 N_2[N2] 1.0×10-31±0.1 N_2[N2]   if   T 298 1.0-31 T 300 PlusMinus -1.6 0.3 N_2[N2]1.0×10-31 (T/ 300 )( -1.6 ±0.3) N_2[N2]  if   200 T 300

Comments on Preferred Values

The preferred values are based on the data from Whytock et al. (1976) and Schieferstein et al. (1983), combined with measurements from Yarwood et al. (1991), Michael et al. (1976) and Anderson and Stephens (1979) in other bath gases and the relative efficiencies determined in Schieferstein et al. (1983). The full falloff curve has been determined in the relative rate measurements from Hippler et al. (1975), leading to k = 3×10 -11 (T/300) 0.3 cm 3 molecule -1 s -1 and F c = 0.85 over the temperature range 200–300 K. Absolute rate measurements in Hippler et al. (1999) of the full falloff curve over the temperature range 200–400 K at pressures between 2 and 200 bar of N 2 led to k = 5×10 -11 (T/300) -0.3 cm 3 molecule -1 s -1 in good agreement with theoretical predictions from Harding et al. (1999). Deviations from third order behavior are negligible under atmospheric conditions.

References

  • Anderson, L. G. and Stephens, R. D. , J. Photochem. 11 , 293 , 1979.
  • Harding, L. B., Stark, H., Troe, J. and Ushakov, V. G. , Phys. Chem. Chem. Phys. , 1 , 63 , 1999.
  • Hippler, H., Schippert, C. and Troe, J. , Int. J. Chem. Kinet. , Symp. 1 , 27 , 1975.
  • Hippler, H., Siefke, M., Stark, H. and Troe, J. , Phys. Chem. Chem. Phys. , 1 , 57 , 1999.
  • Michael, J. V., Payne, W. A. and Whytock, D. A. , J. Chem. Phys. , 65 , 4830 , 1976.
  • Schieferstein, M., Kohse-Höinghaus, K. and Stuhl, F. , Ber. Bunsenges. Phys. Chem. , 87 , 361 , 1983.
  • Whytock, D. A., Michael, J. V. and Payne, W. A. , Chem. Phys. Lett. , 42 , 466 , 1976.
  • Yarwood, G., Sutherland, J. W., Wickramaaratchi, M. A. and Klemm, R. B. , J. Phys. Chem. , 95 , 8771 , 1991.