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Selected geometric parameters of compounds 3–5.
| 3 | 4 | 5 | |
|---|---|---|---|
| C20-C21 | 1.157 (13)/1.136 (16) * | 1.312 (4) | 1.315 (5) |
| C17C20C21 | 175.3 (11)/175.2 (15) | − | − |
| C20-Cl1(Cl2) | 1.750 (3) | 1.748 (4) | |
| C20-C17 | 1.493 (4) | 1.496 (4) | |
| C16C17C20Cl1 (Cl2) | −55.9 (3) | −53.1 (3) |
* geometrical parameters for two independent molecules in 3.
