Table 1. Hydrogen-bond geometry (, ).
Cg1 is the centroid of the C1C6 ring.
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| N2H9S1i | 0.83(3) | 2.56(3) | 3.3760(19) | 168(2) |
| C1H2Cg1ii | 0.98 | 2.61 | 3.529(3) | 157 |
Symmetry codes: (i) 
; (ii) 
.
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