title: N'-[(E)-1-(2-Fluoro-phen-yl)ethyl-idene]pyridine-4-carbohydrazide.
abstract: The title compound, C14H12FN3O, adopts an E conformation with respect to the azomethine bond. The pyridyl and fluoro-benzene rings make dihedral angles of 38.58 (6) and 41.61 (5)° respectively with the central C(=O)N2CC unit, resulting in a non-planar mol-ecule. The inter-molecular inter-actions comprise two classical N-H⋯O and N-H⋯N hydrogen bonds and four non-classical C-H⋯O and C-H⋯F hydrogen bonds. These inter-actions are augmented by a weak π-π inter-action between the benzene and pyridyl rings of neighbouring mol-ecules, with a centroid-centroid distance of 3.9226 (10) Å. This leads to a three-dimensional supra-molecular assembly in the crystal system. The F atom is disordered over two sites in a 0.559 (3): 0.441 (3) ratio, through a 180° rotation of the fluoro-benzene ring.
authors.affiliation: Department of Chemistry, Christ University, Hosur Road, Bangalore 560 029, Karnataka, India.
authors.forename: P B
authors.initials: PB
authors.lastname: Sreeja
authors.affiliation: Department of Chemistry, Faculty of Science, Eastern University, Sri Lanka, Chenkalady, Sri Lanka.
authors.forename: M
authors.initials: M
authors.lastname: Sithambaresan
authors.affiliation: Department of Applied Chemistry, Cochin University of Science and Technology, Kochi 682 022, India.
authors.forename: N
authors.initials: N
authors.lastname: Aiswarya
authors.affiliation: Department of Applied Chemistry, Cochin University of Science and Technology, Kochi 682 022, India.
authors.forename: M R Prathapachandra
authors.initials: MR
authors.lastname: Kurup