Table 1. Selected bond lengths ().
| Ni1C6 | 1.863(3) | Ni2N1 | 2.102(2) |
| Ni1C7 | 1.871(3) | Ni2N2i | 2.116(2) |
| Ni2N3 | 2.071(2) |
Symmetry code: (i) 
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