Table 2. A summary of short inter­atomic contacts (Å) for (I)^a .

Contact	Distance	ΣvdW	Δ|(d norm −ΣvdW)|	Symmetry operation
H2N⋯O1b	1.92	2.61	0.69	1 − x, −y, 2 − z
H1O⋯S1b	2.21	2.89	0.68	1 + x, y, z
H1N⋯O3b	2.17	2.61	0.44	1 − x, −y, 1 − z
H3B⋯H8	2.08	2.18	0.10	x, y, 1 + z
H9⋯C1	2.60	2.79	0.19	1 − x, 1 − y, 1 − z
C5⋯O3	3.17	3.22	0.05	1 − x, − y, 1 − z
H2A⋯S1	2.87	2.89	0.02	1 − x, 1 − y, 2 − z
H9⋯S1	2.89	2.89	0.00	1 − x, 1 − y, 1 − z

Notes: (a) The inter­atomic distances are calculated in Crystal Explorer 17 (Turner et al., 2017 ▸) whereby the X—H bond lengths are adjusted to their neutron values; (b) these inter­actions correspond to conventional hydrogen bonds.