Table A.2.
Modified Arrhenius parameters a for the fit of the global rate coefficients considered in this section over the temperature range 40-400 K. Branching ratios (BR) are calculated from the ratio between an individual rate coefficient and the total loss rate at 40 K (obtained from the exact values and not from the fit). The A(B) notation indicates AB.
| Reaction | α | β | γ | BR |
|---|---|---|---|---|
| C2H5 + S → H2CS + CH3 | 2.1(-10) | 2.0(-1) | -2.5(0) | 0.73 |
| C2H5 + S → C2H4 + HS | 5.9(-11) | -9.1(-3) | 1.1(1) | 0.24 |
| C2H5 + S → CH3CHS + H | 7.7(-12) | 3.2(-1) | -9.0(0) | 0.025 |
| C2H5 + S → CH2CHSH + H | 4.1(-12) | 4.4(-1) | -1.6(1) | 0.012 |
| C2H5 + S → cy − CH2SCH2 + H | 1.2(-14) | 8.0(-1) | -4.1(1) | 3.1(-5) |
a The modified Arrhenius expression reads: k = α(T/300 K)βexp(−γ/T). Units for the parameters are: α - cm3 s−1, β - dimensionless, γ - K.
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