Table 2. Selected geometric parameters (Å, °) for 2 .
| Ni1—N1 | 1.843 (2) | Ni1—S1 | 2.1316 (10) |
| Ni1—N3 | 1.917 (3) | S1—C1 | 1.745 (3) |
| Ni1—N2 | 1.924 (2) | N1—C7 | 1.285 (3) |
| N1—Ni1—N3 | 162.95 (10) | N1—Ni1—S1 | 98.90 (7) |
| N1—Ni1—N2 | 87.80 (10) | N3—Ni1—S1 | 97.67 (8) |
| N3—Ni1—N2 | 76.05 (10) | N2—Ni1—S1 | 171.77 (7) |
| N1—C8—C9—N2 | 45.1 (3) |