title: 4-{[4-(Di-methyl-amino)-benzyl-idene]amino}-benzene-sulfonamide.
abstract: The title Schiff base compound, C15H17N3O2S, is non-planar with a dihedral angle of 69.88 (4)° between the planes of the benzene rings. In the crystal, pairs of N-H⋯N hydrogen bonds, between the sulfonamide nitro-gen-H atom and the azomethine N atom, link the mol-ecules into inversion dimers, forming R 2 (2)(16) ring motifs. These dimers are linked by N-H⋯O hydrogen bonds, between the sulfonamide nitro-gen-H atom and one sulfonamide O atom, forming sheets lying parallel to (100). Within the sheets there are weak parallel slipped π-π inter-actions involving inversion-related benzene-sulfonamide rings [centroid-centroid distance = 3.8800 (9) Å; normal distance = 3.4796 (6) Å; slippage = 1.717 Å].
authors.affiliation: Department of Chemistry, Harran University, 63300 Şanlıurfa, Turkey.
authors.forename: Mustafa
authors.initials: M
authors.lastname: Durgun
authors.affiliation: Department of Chemistry, Harran University, 63300 Şanlıurfa, Turkey.
authors.forename: Hasan
authors.initials: H
authors.lastname: Türkmen
authors.affiliation: Science Education Department, Aksaray University, 68100 Aksaray, Turkey.
authors.forename: Tuncay
authors.initials: T
authors.lastname: Tunç
authors.affiliation: Department of Physics, Hacettepe University, 06800 Beytepe, Ankara, Turkey.
authors.forename: Tuncer
authors.initials: T
authors.lastname: Hökelek