Table 1. Hydrogen-bond geometry (, ).
Cg1 is the centroid of the C15C20 phenyl ring.
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| N1H1BN2i | 0.91(3) | 2.09(3) | 2.970(2) | 163(3) |
| C9H9Cg1ii | 0.95 | 2.88 | 3.574(2) | 131 |
Symmetry codes: (i) 
; (ii) 
.
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