4-(Dimethylamino)benzohydrazide

The title compound, C 9 H 13 N 3 O, crystallizes in the monoclinic space group C 2/ c and all non-hydrogen atoms are within 0.1 Å of the molecular mean plane. In the crystal, the hydrogen-bonding pattern results in [001] chains built up from fused R 2 2 (6) and R 2 2 (10) rings; the former consists of N—H...N bonds and the latter N—H...O bonds. Electrostatic and dispersion forces are major contributors to the lattice energy, which was estimated by DFT calculations to be −215.7 kJ mol −1 .