Table 1. Hydrogen-bond geometry (, ).

DHA	DH	HA	D A	DHA
N1H1AO1i	0.88(5)	2.00(5)	2.879(4)	175(4)
N1H1BBr1ii	0.88(4)	2.58(4)	3.450(3)	179(4)
N1H1CBr1iii	0.89(4)	2.51(4)	3.321(3)	152(3)
O4H4O3iv	0.83(2)	2.01(2)	2.828(3)	166(5)
O3H3ABr1ii	0.84(5)	2.50(5)	3.335(3)	170(4)
O3H3BBr1v	0.84(2)	2.55(3)	3.296(3)	148(4)

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