Experimental

R factor = 0.041; wR factor = 0.108; data-to-parameter ratio = 12.4. The title compound, C16H17NOS2, consists of a carbazole skeleton with tetrahydrofuran and dithiolane rings. In the indole ring system, the benzene and pyrrole rings are nearly coplanar, forming a dihedral angle of 1.57 (15). The cyclo-hexenone and tetrahydrofuran rings have envelope conforma-tions, while the dithiolane ring adopts a twist conformation. In the crystal structure, pairs of weak intermolecular N—H S hydrogen bonds link the molecules into centrosymmetric dimers with R2 2(16) ring motifs. Weak C—H interactions may further stabilize the structure. Related literatur