ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE, cilt.60, 2004 (SCI-Expanded)
The title compound, C18H21NO3, consists of a carbazole skeleton with carboxyethyl and ethyl groups at positions 2 and 3, respectively. The heterocyclic ring and the benzene ring fused to it are nearly planar, while the cyclohexenone ring adopts a distorted sofa conformation. Molecules are linked in pairs about inversion centers by N-H...O hydrogen bonds [N...O=2.831(3) Angstrom and N-H...O=158 (3)degrees] .