Crystal structure, Hirshfeld surface analysis and inter­action energy calculation of 1-decyl-2,3-di­hydro-1H-benzimidazol-2-one

The title mol­ecule, C(17)H(26)N(2)O, adopts an L-shaped conformation, with the straight n-decyl chain positioned nearly perpendicular to the di­hydro­benzimidazole moiety. The di­hydro­benzimidazole portion is not quite planar as there is a dihedral angle of 1.20 (6)° between the constituent planes. In the crystal, N—H⋯O hydrogen bonds form inversion dimers, which are connected into the three-dimensional structure by C—H⋯O hydrogen bonds and C—H⋯π(ring) inter­actions. Hirshfeld surface analysis indicates that the most important contributions for the crystal packing are from H⋯H (75.9%), H⋯C/C⋯H (12.5%) and H⋯O/O⋯H (7.0%) inter­actions. Based on computational chemistry using the CE–B3LYP/6–31 G(d,p) energy model, C—H⋯O hydrogen bond energies are −74.9 (for N—H⋯O) and −42.7 (for C—H⋯O) kJ mol(−1).