4-(3-Phenyl-3,3a,4,5-tetrahydro-2H-benzo[g]indazol-2-yl)benzenesulfonamide ethanol monosolvate

Abstract

In the title compound ethanol monosolvate, C23H 21N3O2S·-C2H5OH, the dihydropyrazole ring is twisted about the Csp3 - Csp3 bond. Nevertheless, the ring approximates a plane (r.m.s. deviation for the fitted atoms = 0.132 Å) and forms dihedral angles of 5.80 (13) and 12.29 (12)°, respectively, with the fused- and sulfonamide-benzene rings. As the dihydropyrazole C-bound phenyl group is roughly perpendicular to the dihydropyrazole ring [dihedral angle = 74.04 (15)°; the amino group is orientated to the same side of the molecule], to a first approximation, the molecule has a stunted T-shape. The cyclohexene ring adopts a half-chair conformation with the methylene C atom connected to the dihydropyrazole ring lying 0.665 (4) Å out of the plane of the five remaining atoms (r.m.s. deviation = 0.050 Å). The components of the asymmetric unit are connected by an O - H⋯O hydrogen bond. Further links between molecules leading to a three-dimensional architecture are of the type N - H⋯O. © 2012 International Union of Crystallography.