title: Crystal structure of N'-[(E)-(4-chloro-phen-yl)(phen-yl)methyl-idene]-4-methyl-benzene-sulfono-hydrazide.
abstract: The title compound, C20H17ClN2O2S, was obtained by a condensation reaction between 4-chloro-benzo-phenone and tosyl hydrazide. The plane of the methyl-substituted benzene ring forms dihedral angles of 20.12 (12) and 78.43 (13)° with those of the chlorine-substituted benzene ring and the benzene ring, respectively, with the last two rings forming a dihedral angle of 67.81 (13)°. The chlorine substituent was also found to be 0.868 (2):0.132 (2) disordered over these two rings. In the crystal, mol-ecules are linked through pairs of N-H⋯O hydrogen bonds, giving centrosymmetric cyclic dimers [graph set R 2 (2)(8)], which are linked by weak C-H⋯O and C-H⋯Cl inter-actions into a chain structure which extends along the a-axis direction.
authors.affiliation: Department of Physics, UCEP, Panruti 607 106, TamilNadu, India.
authors.forename: J
authors.initials: J
authors.lastname: Balaji
authors.affiliation: Department of Physics, UCEP, Panruti 607 106, TamilNadu, India.
authors.forename: S
authors.initials: S
authors.lastname: Prabu
authors.affiliation: Department of Chemistry, UCEP, Panruti 607 106, TamilNadu, India.
authors.forename: J J F
authors.initials: JJ
authors.lastname: Xavier
authors.affiliation: Department of Physics, UCEP, Panruti 607 106, TamilNadu, India.
authors.forename: P
authors.initials: P
authors.lastname: Srinivasan
keywords: benzene­sulfono­hydrazide; centrosymmetric dimers; condensation reaction; crystal structure; hydrogen bonding