Table 1. Hydrogen-bond geometry (, ).

DHA	DH	HA	D A	DHA
N2H01O1i	0.80(2)	2.00(2)	2.7784(15)	165.5(19)
N4H02O4ii	0.86(2)	1.98(2)	2.8382(16)	177.9(19)
N4H03O4	0.85(2)	2.07(2)	2.8005(16)	143.1(18)
C12H12O2iii	0.95	2.46	3.4096(18)	173
C7H7BO3iv	0.98	2.45	3.2848(19)	143
C17H17Br1v	0.95	3.05	3.6686(15)	124

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