organic compounds
Open access
The benzimidazolone part of the title molecule, C10H8N2O, is almost planar [r.m.s. deviation = 0.014 (1) Å] and the NCH2CCH group forms a dihedral angle of 67.95 (6)° with its best plane. In the crystal, molecules form inversion dimers via pairs of N—HO hydrogen bonds. C—HO interactions connect the dimers, forming a two-dimensional polymeric network parallel to (100).
organic compounds
Open access
In the title compound, C15H14N2O, the fused five- and six-membered ring system is essentially planar, the maximum deviation from the mean plane being 0.009 (1) Å. The benzimidazol-2(3H)-one residue is nearly perpendicular to the benzyl ring, forming a dihedral angle of 77.41 (6)°. In the crystal, inversion dimers are formed by pairs of N—HO hydrogen bonds; these dimers are linked by weak C—HO interactions into a two-dimensional array in the (102) plane.