Crystal structure of 1,6-dithiacyclodeca-cis-3,cis-8-diene (DTCDD)

The title compound, C8H12S2 (trivial name DTCDD), was obtained as a side product of the reaction between cis-1,4-dichlorobut-2-ene and sodium sulfide. The asymmetric unit consists of one-quarter of the molecule (S site symmetry 2) and the complete molecule has 2/m (C2h) point symmetry with the C=C bond in an E conformation. The geometry of the title compound is compared to those of a chloro derivative and a mercury complex