Table 3. Selected bond lengths (Å) for 3 .
| Ni1—N1 | 2.0517 (11) | Ni1—N21 | 2.1266 (10) |
| Ni1—N2 | 2.0552 (11) | Ni1—N31 | 2.1523 (11) |
| Ni1—N11 | 2.1358 (10) | Ni1—N41 | 2.1291 (11) |
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