Table 2. Structural parameters of the concave moiety in IV–V.
| (P2)2 ⊃ C70 (IV) | (P2)2 ⊃ C70 (V) | |
| Bowl depth | ||
| d (Å) | 2.05 | 1.83 |
| D (Å) | 4.16 | 3.47 |
| Torsion angles | ||
| A–B (°) | 31.9 | 13.2 |
| A–C (°) | 29.1 | 30.3 |
| A–E (°) | 29.6 | 37.3 |
| A–F (°) | 33.8 | 30.5 |
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