title: 1-[(Z)-2-Phenyl-hydrazin-1-yl-idene]-1-(piperidin-1-yl)propan-2-one.
abstract: A Z configuration about the imine bond [1.3025 (18) Å] in the title compound, C(14)H(19)N(3)O, allows for the formation of an intra-moleclar N-H⋯N hydrogen bond between the hydrazone H and piperidine N atoms; the carbonyl group is disposed to lie over the piperidine residue, which is in a chair form. A twist between the terminal benzene ring and the hydrazine residue is seen [N-N-C-C torsion angle = 163.81 (12)°]. Helical supra-molecular chains along the c axis mediated by N-H⋯O hydrogen bonds are the most prominent feature of the crystal packing. The chains are connected into layers lying in the ac plane by weak C-H⋯π contacts involving two methyl-ene H atoms and an adjacent benzene ring.
authors.forename: Hatem A
authors.initials: HA
authors.lastname: Abdel-Aziz
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng
authors.forename: Edward R T
authors.initials: ER
authors.lastname: Tiekink
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