Table 2. Stern–Volmer constants (Ksv) and the quenching rate constants (kq) for complexes 6a and 6b–8b.
| Entry | K sv/mmHg–1 | k q/s–1 mmHg–1 | k q/s–1 M–1 |
| 6a | 3.0 × 10–2 | 4.4 × 103 | 4.7 × 109 |
| 6b | 5.0 × 10–2 | 8.3 × 103 | 8.9 × 109 |
| 7b | 8.1 × 10–2 | 1.2 × 104 | 1.3 × 1010 |
| 8b | 6.4 × 10–2 | 8.8 × 103 | 9.4 × 109 |