Selected topological parameters of the short O—H⋯O/O⁺—H⋯O⁻ hydrogen bond H⋯O BCPs for each system. The energy densities (kinetic G_BCP, potential V_BCP and total H_BCP) are in units of Hartrees Å⁻³. See ESI† (Table S5) for full list of topological parameters including those of the O—H bond.

System	Interaction	Rij (Å)	ρ(rBCP) (e Å−3)	∇2ρ(rBCP) (e Å−5)	G(rBCP)	V(rBCP)	H(rBCP)	|V|/G
1	O1—H1⋯O3	1.2806	0.91(4)	3.0(2)	0.82	−1.43	−0.61	1.74
2	O1—H1⋯O2	1.2953	0.88(3)	−1.7(1)	0.58	−1.27	−0.7	2.19
3d1	O1—H1⋯O13	1.3609	0.78(4)	0.95(1)	0.58	−1.09	−0.51	1.87
3d2	O9—H9⋯O14	1.3049	0.88(4)	1.89(2)	0.74	−1.35	−0.61	1.82