CH2(S) + AR -> CH2 + AR

k = 9.00E+12 exp(-600 cal/mol /RT) cm3/mol s

SOURCE:
The rate coefficient is the average of the values of Langford et al. (1983), Ashfold et al. (1981), Wegener (1990) and Hancock and Heal (1992) with the temperature dependence taken from Wegener (1990) and Hancock and Heal (1992).

COMMENTS:
Served as an optimization variable for GRI-Mech 3.0 and was not changed.
REFERENCES:
Langford et al. (1983)
Langford, A.O., Petek, H., and Moore, C.B. (1983) J. Chem. Phys. 78, 6650.
Ashfold et al. (1981)
Ashfold, M.N.R., Fullstone, M.A., Hancock, G., and Keltey, G.W (1981) Chem. Phys. 55, 245.
Wegener (1990)
Wegener, R. (1990) Z. Naturforschung 45a, 649.
Hancock et al. (1992)
Hancock, G., and Heal, M.R. (1992) J. Phys. Chem. 96, 10316. 
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    Temp      delta-S     delta-H      kf          kr         Keq
     (K)    (cal/mol K)  (kcal/mol) ----(mol,cm3,s)-----   
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     300         1.2        -9.0    3.29E+12    5.09E+05    6.47E+06
     500         1.4        -8.9    4.92E+12    3.08E+08    1.60E+04
    1000         1.6        -8.8    6.65E+12    3.55E+10    1.88E+02
    1500         1.6        -8.8    7.36E+12    1.71E+11    4.31E+01
    2000         1.6        -8.8    7.74E+12    3.75E+11    2.06E+01
    2500         1.6        -8.8    7.98E+12    6.02E+11    1.33E+01
    3000         1.6        -8.8    8.14E+12    8.25E+11    9.86E+00
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