Table 1. Selected geometric parameters (Å, °).
| O1—C2 | 1.368 (6) | C1—C6 | 1.394 (8) |
| O2—C1 | 1.350 (7) | C6—C5 | 1.385 (8) |
| N1—C7 | 1.269 (8) | C6—C7 | 1.462 (9) |
| N1—C8 | 1.409 (8) | ||
| C12—O3—C14 | 116.5 (6) | C9—C8—N1 | 125.6 (7) |
| C7—N1—C8 | 123.1 (6) | N1—C7—C6 | 122.1 (6) |
| C7—N1—C8—C9 | −5.5 (11) | C1—C6—C7—N1 | 2.0 (10) |
| C5—C6—C7—N1 | −178.7 (7) |