Table 3. Calculated Rate Constants (kapp, M–1 s–1, 298.15 K) of the Reaction between the Depsidones and the Radicals in Water Following the SET Mechanism.
| HO• |
O2•– |
||||
|---|---|---|---|---|---|
| comp. | main forms | % | kapp | reagents | kapp |
| 1 | HA– | >90 | 2.90 × 106 | HA• | 2.70 × 108 |
| 2 | HA– | >90 | 3.30 × 107 | HA• | 2.20 × 109 |
| 3 | HA– | >90 | 4.60 × 105 | HA• | 3.80 × 109 |
| 4 | HA– | >90 | 8.60 × 109 | HA• | 1.60 × 109 |
| 5 | HA– | >90 | 1.60 × 108 | HA• | 3.30 × 109 |
| 6 | HA– | ∼100 | 3.00 × 108 | HA• | 5.50 × 109 |
| 7 | HA– | 24 | 8.50 × 109 | HA• | 3.20 × 109 |
| 8 | H2A– | 73 | 7.30 × 109 | H2A• | 7.90 × 109 |
| HA2– | 27 | 8.60 × 109 | HA•– | 8.10 × 109 | |
| 9 | H2A– | 73 | 9.30 × 108 | H2A• | 5.30 × 109 |
| HA2– | 27 | 5.40 × 109 | HA•– | 7.30 × 109 | |
| 10 | H2A– | 73 | 3.50 × 109 | H2A• | 6.80 × 109 |
| HA2– | 27 | 8.60 × 109 | HA•– | 7.90 × 109 | |
| 11 | A– | ∼100 | 8.60 × 109 | A• | 2.60 × 109 |
| 12 | H2A– | 73 | 3.00 × 109 | H2A• | 6.30 × 109 |
| HA2– | 27 | 4.90 × 109 | HA•– | 8.30 × 109 | |