Table 1.
Values for rate constants shown in Fig. 5 for excited state dynamics of [Re]–F and [Re]–Y–OH associated to base.
| Base Independent Parameters
| ||
|---|---|---|
| [Re]–F | [Re]–Y–OH | |
| k0/s−1 a | 7.1 × 105 | 7.1 × 105 |
| kET/s−1 b | – | 6.1 × 104 |
|
| ||
| Base Association and Related Kinetic Parameters | ||
|
| ||
| pyridine | imidazole | |
|
| ||
| kq/M−1 s−1 c | 3.2(6) × 105 | 3.1(6) × 107 |
| Kassoc/M−1 | 16(2) | 157(13) |
| kPCET/s−1 | 4.1(6) × 105 | 4.8(8) × 106 |
a
Determined from natural lifetime of [Re]–F in dichloromethane at room temperature.
b
Calculated from eq (2).
c
Determined from Stern-Volmer analysis of [Re]–F with base in dichloromethane at room temperature.