Bis(1H-benzimidazol-1-yl)methane monohydrate

In the title compound, C15H12N4·H2O, the organic molecule displays approximate non-crystallographic twofold symmetry: the dihedral angle between the benzimidazole ring systems is 81.37 (12)°. In the crystal, the components are linked by O—H...N hydrogen bonds, forming chains propagating in [101]. Aromatic π–π stacking [centroid–centroid separation = 3.595 (2) Å] helps to consolidate the structure.