ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, cilt.55, ss.114-116, 1999 (SCI-Expanded)
The title compound, C18H19NO2S2, consists Of a carbazole skeleton with a pentacyclic dithiolane ring spiro-bonded at position 1 and acetonyl and ethylidene chains at positions 9 and 3, respectively. The heteroatoms and the acetonyl and ethylidene chains in the molecule are responsible for the changes in the bond lengths and angles of the carbazole core.