3-Oxo-5-(piperidin-1-yl)-2,3-dihydro-1H-pyrazole-4-carbonitrile

Abstract

In the title compound, C(9)H(12)N(4)O, the piperidine ring adopts a chair conformation and makes a dihedral angle of 42.49 (11)° with the approximately planar pyrazole moiety [maximum deviation = 0.038 (2) Å]. In the crystal, N-H⋯O and N-H⋯N hydrogen bonds and a weak C-H⋯O inter-action link the mol-ecules into sheets lying parallel to (110).

Fig. 1.

The molecular structure of (I), with displacement ellipsoids are drawn at the 30% probability level.

Fig. 2.

Crystal packing of (I) viewed down the a axis. Hydrogen bonds [N—H···O (x-1, y, z & -x + 2, -y, -z) N—H···N (x-1, y + 1, z)] are drawn as dashed lines.