Table 1. Hydrogen-bond geometry (, ).

DHA	DH	HA	D A	DHA
O1H1N1	0.86(1)	1.91(2)	2.641(2)	143(3)
O1WH1AO2	0.85(1)	1.91(1)	2.756(2)	172(3)
O1WH1BN3i	0.85(1)	2.03(1)	2.845(3)	162(2)
N2H2O1W ii	0.87(1)	1.95(1)	2.806(3)	169(3)
C7H7O1W ii	0.93	2.49	3.263(3)	140
C10H10O1W ii	0.93	2.45	3.362(3)	165
C11H11Br1iii	0.93	2.93	3.825(3)	162

Symmetry codes: (i) ; (ii) ; (iii) .