Table 1.
Rate constants (cm3 s−1 mol−1), branching ratios (%Σ) and efficiencies (k/kcoll) for the reactions of [L·M·ClO2]− (L = Cl, F, Br, I, ClO2, SO3; M = Na, Li) anions with SO2. The reaction of ClO2− with SO2 is also reported for comparative purposes. OIT: oxygen ion transfer; OAT: oxygen atom transfer; DOT: double oxygen transfer.
| Reaction | kdec (×10−10) § | k/kcoll (%) | OIT | OAT | DOT |
|---|---|---|---|---|---|
| ClO2− + SO2 [47] | 9.10 | 63.8 | 86.5 | 4.2 | 9.3 |
| [Cl·Na·ClO2]− + SO2 | 2.88 | 24.2 | 74.2 | 8.8 | 17.0 |
| [F·Na·ClO2]− + SO2 | 3.75 | 30.8 | 89.2 | 3.7 | 7.1 |
| [Br·Na·ClO2]− + SO2 | 2.12 | 18.7 | 73.4 | 10.1 | 16.5 |
| [I·Na·ClO2]− + SO2 | 1.85 | 16.8 | 68.9 | 13.7 | 17.4 |
| [Cl·Li·ClO2]− + SO2 | 1.81 | 14.5 | 84.7 | 7.9 | 7.4 |
| [ClO2·Na·ClO2]− + SO2 | 7.48 | 66.0 | 81.8 | 4.8 | 13.4 |
| [SO3·Na·ClO2]− + SO2 | 3.74 | 33.0 | 70.4 | 6.9 | 22.7 |
| [(NaClO2)2·ClO2]− + SO2 | 7.39 | 68.1 | - | - | - |
§ ±30%.