Table 1. Hydrogen-bond geometry (Å, °).
Cg is the centroid of N1/C1/C2/C3/C5 pyridyl ring.
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C1—H1⋯N1i | 0.93 | 2.61 | 3.484 (4) | 158 |
| C8—H8⋯Cgii | 0.93 | 2.77 | 3.560 (4) | 143 |
Symmetry codes: (i) 
; (ii) 
.
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