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Torsion angles and least-square planes of aromatic rings of I, II, and III.
| Molecule | ϕ1 | ϕ2 | ϕ3 | ∠AB |
|---|---|---|---|---|
| Ia | −146.9(3) | 145.9(2) | 87.46(16) | 54.40(7) |
| Ib | −147.4(2) | 168.88(19) | 77.35(16) | 62.55(7) |
| II | 137.5(2) | 167.77(12) | −84.58(13) | 60.12(4) |
| IIIa | −148.9(3) | 164.83(2) | −104.43(2) | 61.00(9) |
| IIIb | −147.7(3) | 147.28(2) | −87.85(4) | 55.62(9) |
ϕ1 = C2–C10–C11–C12; ϕ2 = C2–C1–C17–C22; ϕ3 = N1–S1–C23–C28.
