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Effect of pH and CO2 on the values of kon and k0 for Dr-Nb(III)-induced isomerization of peroxynitrite at 22.0 °C a.
| pH | − CO2 | + CO2 | ||
|---|---|---|---|---|
|
|
|||
| kon (M−1 s−1) | k0 (s−1) | kon (M−1 s−1) | k0 (s−1) | |
| 5.8 | (2.2 ± 0.3) × 105 | (8.1 ± 0.8) × 10−1 | (2.8 ± 0.3) × 105 | 4.1 ± 0.4 |
| 7.0 | (4.7 ± 0.5) × 104 | (3.1 ± 0.3) × 10−1 | n.d. | (1.5 ± 0.2) × 101 |
| 8.5 | (1.1 ± 0.1) × 104 | (4.9 ± 0.5) × 10−2 | n.d. | (4.8 ± 0.5) × 101 |
a The CO2 concentration was 1.2 × 10−3 M. 5.0 × 10−2 M Bis-Tris propane buffer. n.d., not determined.
