(E)-1-[(5-Chloro-3-methyl-1-phenyl-1H-pyrazol-4-yl)methyl­idene]-2-phenyl­hydrazine: sheets built from [pi]-stacked hydrogen-bonded chains

The reaction of a chloro­pyrazole­carbaldehyde with phenyl­hydrazine proceeds via a simple condensation rather than substitution or cyclo­condensation. The resulting compound forms hydrogen-bonded chains, which are linked into sheets by [pi]-[pi] stacking inter­actions.