title: Crystal structure of ethyl 2-phenyl-9-phenyl-sulfonyl-9H-carbazole-3-carboxyl-ate.
abstract: In the title compound, C27H21NO4S, the dihedral angles between the carbazole ring system (r.m.s. deviation = 0.015 Å) and the sulfur-bonded and directly linked benzene rings are 79.98 (11) and 53.51 (18)°, respectively. The benzene rings subtend a dihedral angle of 48.4 (2)°. The ethyl side chain of the ester group has an extended conformation [C-O-C-C = -172.3 (3)°]. In the crystal, inversion dimers linked by pairs of weak C-H⋯O hydrogen bonds generate R 2 (2)(22) loops. The dimers are linked by weak C-H⋯π and π-π [centroid-to-centroid distances ranging from 3.5042 (14) to 3.888 (2) Å] inter-actions, thereby forming a three-dimensional supra-molecular network.
authors.affiliation: Research and Development Centre, Bharathiar University, Coimbatore 641 046, India ; Department of Chemistry, Pallavan College of Engineering, Kanchipuram 631 502, India.
authors.forename: M
authors.initials: M
authors.lastname: Umadevi
authors.affiliation: Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India.
authors.forename: P
authors.initials: P
authors.lastname: Raju
authors.affiliation: Department of Sciences, Chemistry and Materials Research Lab, Amrita Vishwa Vidyapeetham University, Ettimadai, Coimbatore 641 112, India.
authors.forename: R
authors.initials: R
authors.lastname: Yamuna
authors.affiliation: Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India.
authors.forename: A K
authors.initials: AK
authors.lastname: Mohanakrishnan
authors.affiliation: Department of Physics, CPCL Polytechnic College, Chennai 600 068, India.
authors.forename: G
authors.initials: G
authors.lastname: Chakkaravarthi
keywords: 9H-carbazole-3-carboxyl­ate; C—H⋯π inter­actions; biological activity; crystal structure; ester; hydrogen bonding; indole derivatives; phenyl­sulfon­yl; π–π inter­actions