PCET rate constants at pH 5.5 and 8.5 for 2MP-α3C and 4MP-α3C with [Ru(L)3]3+ oxidants and their Ru3+/2+ potentials.
| Oxidant | pH | k PCET (M−1 s−1) | E°a (mV vs. NHE) |
|---|---|---|---|
| 2MP-α 3 C | |||
| Ru(dmb)33+ | 5.5(±0.1) | 2.8 × 103 | +1100 |
| Ru(bpy)33+ | 5.5(±0.1) | 1.5 × 104 | +1260 |
| Ru(dmb)33+ | 8.5(±0.1) | 7.7 × 105 | +1100 |
| Ru(bpy)33+ | 8.5(±0.1) | 4.8 × 106 | +1260 |
| Ru(deeb)33+ | 8.5(±0.1) | 3.2 × 107 | +1540 |
| 4MP-α 3 C | |||
| Ru(dmb)33+ | 5.5(±0.1) | 4.4 × 103 | +1100 |
| Ru(bpy)33+ | 5.5(±0.1) | 2.1 × 104 | +1260 |
| Ru(dmb)33+ | 8.5(±0.1) | 1.5 × 106 | +1100 |
| Ru(bpy)33+ | 8.5(±0.1) | 6.1 × 106 | +1260 |
| Ru(deeb)33+ | 8.5(±0.1) | 5.4 × 107 | +1540 |
Error bars are estimated to be ±30 mV.