Table 2. Selected geometric parameters (Å, °) for 2 .
| C1—C2 | 1.3927 (9) | C8—C9 | 1.4073 (8) |
| C1—Se1 | 1.9037 (6) | C9—N2 | 1.3388 (8) |
| C2—C7 | 1.4715 (8) | C10—N2 | 1.3354 (9) |
| C7—O1 | 1.2349 (8) | N1—Se1 | 1.9788 (5) |
| C7—N1 | 1.3653 (8) | Se1—N2i | 2.3831 (6) |
| C8—N1 | 1.4007 (7) | ||
| C2—C1—Se1 | 112.57 (4) | C7—N1—Se1 | 115.23 (4) |
| C6—C1—Se1 | 128.04 (5) | C8—N1—Se1 | 120.27 (4) |
| C1—C2—C7 | 117.65 (5) | C10—N2—C9 | 120.38 (5) |
| N1—C7—C2 | 110.55 (5) | C1—Se1—N2i | 90.65 (2) |
| C7—N1—C8 | 124.50 (5) | N1—Se1—N2i | 174.44 (2) |
Symmetry code: (i)
.