The title molecule, C13H24N2O, possesses twofold symmetry, with the C
= O group lying on a crystallographic twofold axis in the unit cell. T
he cyclohexane rings adopt a chair conformation, Successive molecules
along the twofold axis are related by the short b translation and inte
ract through two identical diad-related N-H...O hydrogen bonds [2.962(
5) Angstrom] in which the O atom lying on the twofold axis acts as a c
ommon acceptor for the diad-related amino protons.