(E)-N 2-{4-[(E)-2-(4-chlorobenzoyl)-ethenyl]-3-methyl-1-phenyl- 1H-pyrazol-5-yl}-N1,N1-dimethyl-formamidine: Polarized molecules within sheets of π-stacked hydrogen-bonded chains

Article abstract of DOI:10.1107/S0108270110012023

The molecules of the title compound, C₂₂H₂₁ClN ₄O, are conformationally chiral, and in the space group P2 ₁2₁2₁ each crystal contains only one conformational enantiomer. The intramolecular dimensions provide evidence for polarization of the electronic structure. Mol-ecules are linked by a single C - H...π(arene) hydrogen bond into chains, which are themselves weakly linked into sheets by an aromatic π-π stacking interaction.