Table 1. Hydrogen-bond geometry (, ).

DHA	DH	HA	D A	DHA
N3AH3AO3B	0.871(17)	2.117(17)	2.8679(13)	144.0(14)
N3AH3AN2B	0.871(17)	2.432(16)	3.1530(14)	140.5(13)
C7AH7AAO3B	0.95	2.47	3.1523(14)	129
C10AH10CO1B i	0.98	2.46	3.3159(18)	145
N3BH3BO3A ii	0.901(16)	2.068(16)	2.8605(13)	146.1(13)
N3BH3BN2A ii	0.901(16)	2.444(15)	3.1598(14)	136.6(12)
C5BH5BAO2A iii	0.95	2.63	3.3484(18)	133
C7BH7BAO3A ii	0.95	2.51	3.1864(14)	128
C17BH17CN4B	0.99	2.63	3.2436(15)	120

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