Table 5. Major percentage contribution of the different inter­molecular inter­actions to the Hirshfeld surfaces for the acid, di­amide and 2:1 co-crystal.

Contact	Acid	Di­amide	Co-crystal
H⋯H	48.7	45.2	49.9
O⋯H/H⋯O	20.6	25.6	21.3
C⋯H/H⋯C	16.7	12.0	15.9
N⋯H/H⋯N	3.8	8.9	2.7
C⋯C	5.9	6.4	6.6