2-Bromo-1-(1-phenyl-sulfonyl-1H-indol-3-yl)propan-1-one.

In the title compound, C17H14BrNO3S, the phenyl ring makes a dihedral angle of 89.78 (16)° with the plane of the indole ring system. The terminal Br atom and the methyl group are disordered over two sets of sites, with site occupancies of 0.

9-[4-(Azido-meth-yl)phen-yl]-9H-carbazole-3-carbo-nitrile.

In the title compound C20H13N5, the dihedral angle between the carbazole ring system (r.m.s.

1-[6-(1H-Indol-1-yl)pyridin-2-yl]-1H-indole-3-carbaldehyde.

In the title compound, C22H15N3O, the dihedral angle between the two indole units is 33.72 (3)°. The mol-ecular structure features a weak intra-molecular C-H⋯N inter-action.

Ethyl 1-phenyl-sulfonyl-1H-indole-2-carboxyl-ate.

In the title compound, C(17)H(15)NO(4)S, the six-membered ring of the indole unit makes a dihedral angle of 72.40 (5)° with the phenyl ring. The mol-ecular structure features a short C-H⋯O contact.

9-p-Tolyl-9H-carbazole-3-carbonitrile.

In the title compound, C(20)H(14)N(2), the carbazole ring system is essentially planar (r.m.s.