Table 1. Selected geometric parameters (Å, °) for 1 .
| Co1—N1 | 2.0650 (16) | Co1—N31 | 2.1785 (14) |
| Co1—N2 | 2.0720 (16) | Co1—N3 | 2.1950 (15) |
| Co1—N21 | 2.1666 (15) | Co1—N11 | 2.2032 (15) |
| N1—Co1—N2 | 177.65 (6) | N21—Co1—N3 | 88.82 (6) |
| N1—Co1—N21 | 91.08 (6) | N31—Co1—N3 | 177.72 (6) |
| N2—Co1—N21 | 88.02 (6) | N1—Co1—N11 | 92.70 (6) |
| N1—Co1—N31 | 89.52 (6) | N2—Co1—N11 | 88.06 (6) |
| N2—Co1—N31 | 92.66 (6) | N21—Co1—N11 | 174.69 (5) |
| N21—Co1—N31 | 90.26 (6) | N31—Co1—N11 | 93.50 (5) |
| N1—Co1—N3 | 88.41 (6) | N3—Co1—N11 | 87.56 (6) |
| N2—Co1—N3 | 89.39 (6) |