Table 2. Summary of short inter­atomic contacts (Å) in (I)^a .

Contact	Distance	Symmetry operation
O2⋯H3N	1.89	x, 1 + y, z
O1⋯H2N	1.89	x, −1 + y, z
O2⋯H6A	2.57	1 − x, 1 − y, 1 − z
N4⋯H5	2.52	− + x,  − y, − + z
C7⋯H12	2.64	−x, −y, 1 − z
O1W⋯H1	2.55	− x,  + y,  − z
C7⋯O1	3.16	1 − x, − y, 1 − z
N1⋯H1W	1.83	x, y, z

Notes: (a) The inter­atomic distances were calculated in Crystal Explorer 17 (Turner et al., 2017 ▸) whereby the X—H bond lengths are adjusted to their neutron values.