title: N,N-Diethyl-2-(4-methyl-benzene-sulfonamido)-benzamide.
abstract: The asymmetric unit of the title compound, C(18)H(22)N(2)O(3)S, contains two mol-ecules, exhibiting similar conformations [C-S-N-C torsion angles of -82.2 (2) and -70.4 (2)°, and dihedral angles between the mean planes of the aromatic rings of 56.6 (6) and 51.6 (6)° in mol-ecules I and II, respectively]. However, the two independent mol-ecules show distinctly different hydrogen-bonding patterns. In the crystal, molecules I form inversion dimers via pairs of N-H⋯O hydrogen bonds, whereas for molecules II the N-H⋯O hydrogen bond is intramolecular. The hydrogen-bonded dimers of I further propagate along the b-axis direction through π-π inter-actions [the distance between ring centroids is 3.8424 (8) Å].
authors.affiliation: Chemistry Department, Menarini Ricerche S.p.A., Via dei Sette Santi 3, I-50131 Firenze,  Italy.
authors.forename: Maria
authors.initials: M
authors.lastname: Altamura
authors.forename: Valentina
authors.initials: V
authors.lastname: Fedi
authors.forename: Rossano
authors.initials: R
authors.lastname: Nannicini
authors.forename: Paola
authors.initials: P
authors.lastname: Paoli
authors.forename: Patrizia
authors.initials: P
authors.lastname: Rossi