Table 4. Selected geometric parameters (Å, °) for (II) .
| C5—C51 | 1.411 (5) | C53—C532 | 1.437 (6) |
| C5—C52 | 1.413 (5) | C511—N511 | 1.136 (4) |
| C5—C53 | 1.433 (5) | C512—N512 | 1.140 (5) |
| C51—C511 | 1.413 (5) | C521—N521 | 1.155 (5) |
| C51—C512 | 1.439 (5) | C522—N522 | 1.153 (5) |
| C52—C521 | 1.428 (5) | C531—N531 | 1.129 (5) |
| C52—C522 | 1.410 (5) | C532—N532 | 1.121 (5) |
| C53—C531 | 1.428 (6) | ||
| C51—C5—C52 | 122.1 (3) | C5—C52—C521 | 121.9 (3) |
| C51—C5—C53 | 119.5 (3) | C5—C52—C522 | 123.0 (3) |
| C52—C5—C53 | 118.4 (4) | C521—C52—C522 | 115.0 (3) |
| C5—C51—C511 | 120.9 (3) | C5—C53—C531 | 121.2 (4) |
| C5—C51—C512 | 122.0 (3) | C5—C53—C532 | 122.0 (4) |
| C511—C51—C512 | 117.1 (3) | C531—C53—C532 | 116.9 (3) |
| C51—C5—C52—C521 | 26.5 (6) | C51—C5—C53—C531 | −153.1 (4) |
| C51—C5—C52—C522 | −150.5 (4) | C51—C5—C53—C532 | 25.9 (6) |
| C52—C5—C53—C531 | 28.8 (6) | C52—C5—C51—C511 | −156.5 (4) |
| C52—C5—C53—C532 | −152.2 (4) | C52—C5—C51—C512 | 22.0 (6) |
| C53—C5—C51—C511 | 25.5 (6) | C53—C5—C52—C521 | −155.5 (4) |
| C53—C5—C51—C512 | −156.0 (4) | C53—C5—C52—C522 | 27.5 (6) |