Calculated primary bond lengths (Å) and angles (°) for the enol, keto and transition-state configurations of DFAH in the S0 and S1 states.
| Parameter | Enol | Keto (S1) | Transition-state (S1) | |
|---|---|---|---|---|
| S0 | S1 | |||
| O1–H2 | 0.987 | 0.993 | 1.618 | 1.219 |
| H2–O3 | 1.741 | 1.693 | 1.016 | 1.224 |
| δ(O1–H2–O3) | 146.90 | 149.50 | 150.10 | 158.40 |