title: Crystal structures of 4-meth-oxy-N-(4-methyl-phenyl)benzene-sulfonamide and N-(4-fluoro-phenyl)-4-meth-oxy-benzene-sulfonamide.
abstract: Crystal structures of two N-(ar-yl)aryl-sulfonamides, namely, 4-meth-oxy-N-(4-methyl-phen-yl)benzene-sulfonamide, C14H15NO3S, (I), and N-(4-fluoro-phen-yl)-4-meth-oxy-benzene-sulfonamide, C13H12FNO3S, (II), were determined and analyzed. In (I), the benzene-sulfonamide ring is disordered over two orientations, in a 0.516 (7):0.484 (7) ratio, which are inclined to each other at 28.0 (1)°. In (I), the major component of the sulfonyl benzene ring and the aniline ring form a dihedral angle of 63.36 (19)°, while in (II), the planes of the two benzene rings form a dihedral angle of 44.26 (13)°. In the crystal structure of (I), N-H⋯O hydrogen bonds form infinite C(4) chains extended in [010], and inter-molecular C-H⋯πar-yl inter-actions link these chains into layers parallel to the ab plane. The crystal structure of (II) features N-H⋯O hydrogen bonds forming infinite one dimensional C(4) chains along [001]. Further, a pair of C-H⋯O inter-molecular inter-actions consolidate the crystal packing of (II) into a three-dimensional supra-molecular architecture.
authors.affiliation: Department of PG Studies and Research in Chemistry, St Aloysius College, Mangalore, India.
authors.forename: Vinola Z
authors.initials: VZ
authors.lastname: Rodrigues
authors.affiliation: Department of PG Studies and Research in Chemistry, St Aloysius College, Mangalore, India.
authors.forename: C P
authors.initials: CP
authors.lastname: Preema
authors.affiliation: Institution of Excellence, University of Mysore, Mysuru-6, India.
authors.forename: S
authors.initials: S
authors.lastname: Naveen
authors.affiliation: Department of Physics, University of Mysore, Mysuru-6, India.
authors.forename: N K
authors.initials: NK
authors.lastname: Lokanath
authors.affiliation: Department of Chemistry, University College of Science, Tumkur University, Tumkur 572 103, India.
authors.forename: P A
authors.initials: PA
authors.lastname: Suchetan
keywords: C—H⋯O inter­actions; C—H⋯π inter­actions; N-(ar­yl)aryl­sulfonamides; crystal structure