1,2-Dihydro-9H-carbazole-4(3H)-thione

Abstract

The crystal structure of the title compound, C12H11NS, features parallel chains of alternating N—H...S hydrogen-bonded mirror-image conformers along [10overline{1}]. The molecular conformation is that of an envelope, with all of the framework atoms except one close to a mean plane (rms deviation 0.054 Å); one C atom of the cyclohexenethione ring forms the envelope flap, which makes a dihedral angle of 48.6 (1)° with the rest of the molecule. There is a π–π* interaction between pairs of enantiomers in adjacent chains; the distance between parallel planes is 3.466 (1) Å.