Table 2. Gibbs Free Energies of Activation (ΔG⧧, kcal/mol), Tunneling Corrections (κ), Rate Constants (keck and kapp, M–1 s–1), and Branching Ratios (Γ, %) of the I3C-Oxidation by HO• Radicals in the Studied Solvents.
|
Water |
pentyl ethanoate |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
mechanism | ΔG⧧ | κ | keck | kapp | Γ | ΔG⧧ | κ | keck | kapp | Γ | |
SET | 2.0 | 5.3a | 2.20 × 1011 | 7.70 × 109 | 33.5 | 112.3 | 6.2a | ∼0.0 | ∼0.0 | ∼0.0 | |
HAT | O11 | 7.4 | 17.1 | 3.97 × 108 | 3.48 × 108 | 1.5 | 8.3 | 20.0 | 1.10 × 108 | 1.00 × 108 | 1.3 |
N1 | 7.9 | 16.8 | 1.68 × 108 | 1.58 × 108 | 0.7 | 9.2 | 15.6 | 1.87 × 108 | 1.86 × 107 | 0.2 | |
C5 | 10.2 | 15.6 | 3.20 × 106 | 3.20 × 106 | ∼0.0 | 13.0 | 11.8 | 2.30 × 104 | 2.30 × 104 | ∼0.0 | |
C6 | 10.1 | 8.6 | 2.00 × 106 | 2.00 × 106 | ∼0.0 | 11.1 | 7.0 | 3.10 × 105 | 3.10 × 105 | ∼0.0 | |
C7 | 10.2 | 8.7 | 1.79 × 106 | 1.79 × 106 | ∼0.0 | 11.0 | 6.9 | 3.70 × 105 | 3.70 × 105 | ∼0.0 | |
C8 | 11.7 | 13.0 | 2.12 × 105 | 2.12 × 105 | ∼0.0 | 12.0 | 8.4 | 7.70 × 104 | 7.70 × 104 | ∼0.0 | |
C10 | 6.1 | 1.8 | 3.90 × 108 | 3.40 × 108 | 1.5 | 6.7 | 2.9 | 2.30 × 108 | 2.20 × 108 | 2.8 | |
RAF | C2 | 0.7 | 1.0 | 3.90 × 1012 | 2.70 × 109 | 11.8 | 3.4 | 1.0 | 2.20 × 1010 | 2.40 × 109 | 31.0 |
C3 | 0.7 | 1.0 | 4.00 × 1012 | 2.70 × 109 | 11.8 | 3.5 | 1.0 | 1.70 × 1010 | 2.30 × 109 | 29.7 | |
C5 | 3.9 | 1.2 | 2.10 × 1010 | 2.40 × 109 | 10.5 | 3.9 | 1.0 | 9.40 × 109 | 2.10 × 109 | 27.1 | |
C6 | 4.4 | 1.1 | 8.20 × 109 | 2.00 × 109 | 8.7 | 7.8 | 1.1 | 1.30 × 107 | 1.30 × 107 | 0.2 | |
C7 | 4.0 | 1.1 | 1.70 × 1010 | 2.30 × 109 | 10.0 | 7.1 | 1.1 | 4.30 × 107 | 4.20 × 107 | 0.5 | |
C8 | 3.9 | 1.1 | 1.70 × 1010 | 2.30 × 109 | 10.0 | 5.5 | 1.1 | 7.00 × 108 | 5.50 × 108 | 7.1 | |
koverall | 2.30 × 1010 | 7.74 × 109 |
The nuclear reorganization energy (λ).