Table 1. Hydrogen-bond geometry (, ).

DHA	DH	HA	D A	DHA
N1H1O2A i	0.88	1.76	2.637(2)	175
N3H3AO1A ii	0.88	2.04	2.826(2)	148
N3H3BO1A i	0.88	1.92	2.798(2)	173
C6H6BO1iii	0.98	2.52	3.434(3)	155
C1AH1AO1iv	0.95	2.60	3.365(3)	138
C1AH1AO2A v	0.95	2.60	3.383(3)	140

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