Table 3. Hydrogen-bond geometry (Å, °) for 3 .
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C5—H5⋯F5i | 0.95 | 2.37 | 3.247 (2) | 153 |
| C3—H3⋯F3ii | 0.95 | 2.46 | 3.106 (2) | 126 |
| C1—H1C⋯F1iii | 0.98 | 2.51 | 3.208 (3) | 128 |
Symmetry codes: (i) 
; (ii) 
; (iii) 
.
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