Ethyl 1,3-dimethyl-1H-indole-2-carboxyl­ate

In the title compound, C13H15NO2, the plane of the indole ring forms a dihedral angle of 5.26 (6)° with the ester group and the ethyl side-chain C atoms. The crystal packing is stabilized by weak inter­molecular C—H⋯O and C—H⋯π inter­actions

Ethyl 2-(bromo­meth­yl)-5-meth­oxy-1-phenyl­sulfonyl-1H-indole-3-carboxyl­ate

In the title compound, C19H18BrNO5S, the plane of the phenyl ring forms a dihedral angle of 76.99 (6)° with the indole ring system. The Br atom is disordered over two positions, with site-occupancy factors of 0.833 (14) and 0.167 (14). The mol­ecular structure is stabilized by weak intra­molecular C—H⋯O inter­actions and the crystal packing is stabilized by weak inter­molecular C—H⋯O inter­actions

3-Bromo­meth­yl-2-chloro­meth­yl-1-phenyl­sulfon­yl-1H-indole

In the title compound, C16H13BrClNO2S, the indole mean plane forms a dihedral angle of 73.59 (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

Diethyl 2-{[3-(2,4,6-trimethyl­benz­yl)-1-phenyl­sulfonyl-1H-indol-2-yl]methyl­idene}propane­dioate

In the title compound, C32H33NO6S, the indole ring system makes dihedral angles of 62.78 (10) and 80.53 (8)°, respectively, with the phenyl and benzene rings. In the crystal, the mol­ecules are linked through inter­molecular C—H⋯O hydrogen bonds, forming a chain along the a axis. Between the chains, a weak aromatic π–π stacking inter­action [centroid–centroid distance = 3.831 (2) Å] is observed

7-Phenyl­sulfonyl-7H-benzofurano[2,3-b]carbazole

In the title compound, C24H15NO3S, the dihedral angle between the phenyl ring and the carbozole system is 74.91 (6)°. The S atom exhibits a distorted tetra­hedral geometry [N—S—C = 104.85 (8)°; O—S—O = 119.59 (9)°]. The crystal structure is established by weak inter­molecular π–π inter­actions [centroid–centroid distances = 3.583 (2)–3.782 (2) Å]

Crystal structure of 4-(dimethylamino)-pyridinium 4-aminobenzoate dihydrate

Acknowledgements The authors thank SAIF, IIT, Madras for thedata collection.Peer reviewedPublisher PD

7H-1-Benzofuro[2,3-b]carbazole

In the title compound, C18H11NO, the carbazole and benzofuran rings are almost co-planar, making a dihedral angle of 3.31 (3)°. The crystal structure is stabilized by weak C—H⋯π inter­actions

7-Phenyl­sulfonyl-2,3-dihydro-7H-1,4-benzodioxino[6,7-b]carbazole

In the title compound, C24H17NO4S, the phenyl ring makes a dihedral angle of 88.12 (5)° with the carbazole unit. The mol­ecular structure is stabilized by weak intra­molecular C—H⋯O inter­actions and the crystal packing exhibits weak inter­molecular C—H⋯O and C—H⋯π inter­actions. Two C atoms of the 2,3-dihydro-1,4-dioxine fragment are disordered over two positions with site-occupancy factors of 0.718 (11) and 0.282 (11)

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 63.6 (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 3.734 (2)–3.888 (2) Å]

(2-Methyl-1-phenyl­sulfonyl-1H-indol-3-yl)methanol

In the title compound, C16H15NO3S, the plane of the phenyl ring forms a dihedral angle of 80.37 (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