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Comparison of actual and calculated C–C and C–Br bond lengths (Å) in 7, 9, and 10.
| ||||||||
|---|---|---|---|---|---|---|---|---|
| R | C11–Br1 | C11–Br3 | C12–Br2 | C12–Br4 | C1–C11 | C8–C12 | ||
| CH3 | 7 | Crystal | — | — | — | — | 1.507(2) | 1.513(2) |
| calcd. | — | — | — | — | 1.517 | 1.517 | ||
| CH2Br | 9 | Crystal | 1.981(3) | — | 1.996(3) | — | 1.499(4) | 1.489(4) |
| calcd. | 2.020 | — | 2.021 | — | 1.496 | 1.496 | ||
| CHBr2 | 10 | Crystal | 1.986(8) | 1.956(7) | 1.977(7) | 1.947(8) | 1.51(1) | 1.49(1) |
| calcd. | 1.996 | 1.976 | 1.996 | 1.976 | 1.502 | 1.502 | ||
