Table 1. Selected bond lengths (Å) for (I) .
| Ru1—C1 | 1.893 (3) | Ru2—C20 | 1.902 (3) |
| Ru1—C2 | 1.918 (3) | Ru2—C18 | 1.914 (3) |
| Ru1—N5 | 2.019 (2) | Ru2—Cl4 | 2.4129 (7) |
| Ru1—N15 | 2.093 (2) | Ru2—Cl5 | 2.4199 (7) |
| Ru1—N1 | 2.097 (2) | Ru2—Cl3 | 2.4212 (7) |
| Ru1—Cl1 | 2.4279 (7) | N1—C3 | 1.336 (3) |
| Ru2—C19 | 1.893 (3) |