2,2'-(Ethane-1,2-di-yl)bis-(1H-benzimidazole).

The complete mol-ecule of the title compound, C(16)H(14)N(4), is generated by crystallographic inversion symmetry. In the crystal, mol-ecules are linked by N-H⋯N hydrogen bonds, generating (001) sheets. Weak aromatic π-π stacking inter-actions [centroid-centroid distances = 3.7383 (13) and 3.7935 (14) Å] are also observed.