G. Chakkaravarthi

(2-Methyl-1-phenyl-sulfonyl-1H-indol-3-yl)methanol.

In the title compound, C16H15NO3S, the plane of the phenyl ring forms a dihedral angle of 80.37u2005(8)° with the indole ring system. The crystal packing is stabilized by weak O—H⋯O hydrogen bonds which link the molecules into infinite chains along the a axis of the crystal.

8,9-Dimethoxy-5-phenylsulfonyl-5H-benzo(b)carbazole

In the title compound, C24H19NO2S, the mean plane of the benzo[b]carbazole ring system makes a dihedral angle of 79.26u2005(5)° with the phenyl ring. The S atom is in a distorted tetrahedral configuration. The crystal structure exhibits weak C—H⋯O and C—H⋯π interactions.

6-Meth­oxy-9-phenyl­sulfonyl-2-(2-thien­yl)-9H-thieno[2,3-b]carbazole

In the title compound, C25H17NO3S3, the mean planes of the thieno[2,3-b]carbazole and phenyl rings are inclined at an angle of 63.6u2005(1)°. The molecular structure features short intramolecular C—H⋯O contacts and the crystal packing exhibits weak intermolecular C—H⋯S and π–π interactions [centroid-to-centroid distances 3.734u2005(2)–3.888u2005(2)u2005Å].

3-Bromo-meth-yl-2-chloro-meth-yl-1-phenyl-sulfon-yl-1H-indole.

In the title compound, C16H13BrClNO2S, the indole mean plane forms a dihedral angle of 73.59u2005(19)° with the phenyl ring. The molecular structure is stabilized by weak intramolecular C—H⋯O interactions. The Br atom is disordered over two positions with site occupancy factors of 0.7 and 0.3.

Ethyl 2-acetoxy-methyl-1-phenyl-sulfonyl-1H-indole-3-carboxyl-ate.

In the title compound, C20H19NO6S, the phenyl ring of the phenylsulfonyl group makes a dihedral angle of 83.35u2005(5)° with the indole ring system. The molecular structure exhibits a number of short intramolecular C—H⋯O contacts.

4-Bromo­meth­yl-1-phenyl­sulfon­yl-1H-indole

In the title molecule, C15H12BrNO2S, the indole mean plane and phenyl ring are nearly orthogonal to each other, forming a dihedral angle of 88.19u2005(13)°. The Br atom is disordered over two close positions with occupancies of 0.56u2005(4) and 0.44u2005(4). The crystal packing exhibits weak intermolecular C—H⋯π interactions.

9-Meth­oxy-5-phenyl­sulfonyl-5H-benzo[b]carbazole

In the title compound, C23H17NO3S, the mean plane of the benzo[b]carbazole ring system makes a dihedral angle of 77.17u2005(4)° with the phenyl ring. The S atom is in a distorted tetrahedral configuration. There are three intramolecular C—H⋯O interactions forming five- and six-membered rings with graph-set motifs S(5) and S(6), respectively.

Crystal structure of N-{[3-bromo-1-(phenyl-sulfon-yl)-1H-indol-2-yl]meth-yl}benzene-sulfonamide.

In the title compound, C21H17BrN2O4S2, the indole ring system subtends dihedral angles of 85.96u2005(13) and 9.62u2005(16)° with the planes of the N- and C-bonded benzene rings, respectively. The dihedral angles between the benzene rings is 88.05u2005(17)°. The molecular conformation is stabilized by intramolecular N—H⋯O and C—H⋯O hydrogen bonds and an aromatic π–π stacking [centroid-to-centroid distance = 3.503u2005(2)u2005Å] interaction. In the crystal, short Br⋯O [2.9888u2005(18)u2005Å] contacts link the molecules into [010] chains. The chains are cross-linked by weak C—H⋯π interactions, forming a three-dimensional network.

Ethyl 2-(3,4-dimethoxy­benz­yl)-1-phenyl­sulfonyl-1H-indole-3-carboxyl­ate

In the title compound, C26H25NO6S, the phenyl ring forms a dihedral angle of 82.5u2005(1)° with the indole ring system. The molecular structure is stabilized by weak intramolecular C—H⋯O interactions and the crystal structure is stabilized by weak intermolecular C—H⋯O interactions.

Ethyl 2-[(N-meth-oxy-N-methyl-carbamo-yl)meth-yl]-1-(phenyl-sulfon-yl)-1H-indole-3-carboxyl-ate.

In the title compound, C21H22N2O6S, the phenyl ring forms a dihedral angle of 83.17u2005(7)° with the indole ring system. The methyl group of the ester unit is disordered over two positions with site occupancies of 0.635u2005(6) and 0.365u2005(6). In the crystal structure, weak intramolecular C—H⋯O interactions and intermolecular C—H⋯O, C—H⋯N and C—H⋯π interactions are observed.