Table 2. Bond Angles (in Degrees) Calculated from the Crystal Structures of SION-31, SION-32, SION-33, SION-34, and SION-35.
| C6–N1–C2 | C2–N3–C4 | C5–N7–C8 | C4–N9–C8 | |
|---|---|---|---|---|
| SION-31 | 119.8(2) | 112.9(2)a | 103.1(2)a | 103.7(2)a |
| SION-32 | 118.1(13) | 117.4(14) | 110.2a,b | 106.1a,b |
| SION-33 | 118.3(7) | 111.5(8)a | 106.5(7) | 104.6(7)a |
| SION-34 | 124.6(3) | 113.7(3) | 102.9(3)a | 103.2(3)a |
| SION-35 | 119.5(4) | 112.0(4) | 104.3(3)a | 104.8(3)a |
Metal coordinated to the N atom.
Angles modeled as part of an idealized 5-membered ring.