9-Ethyl-3-(2-methyl-benzo-yl)-9H-carbazole.

In the title compound, C(22)H(19)NO, the dihedral angle between the benzene ring and the carbazole ring system 77.1 (1)°.. The crystal structure is stabilized by inter-molecular aromatic π-π inter-actions between the benzene ring and the pyrrole ring of the carbazole system of neighbouring mol-ecules [centroid-centroid distance = 3.617 (4) Å]. In addition, the crystal structure exhibits a weak inter-molecular C-H⋯π inter-action.

1-[9-Ethyl-6-(2-methyl-benzo-yl)-9H-carbazol-3-yl]ethanone.

In the title compound, C(24)H(21)NO(2), the pendant benzene ring is inclined at a dihedral angle of 86.66 (18)° with respect to the adjacent aromatic ring of the carbozole unit. In the crystal structure, symmetry-related mol-ecules are linked via C-H⋯O and C-H⋯π inter-actions.