The crystal and molecular structure of 1,4-dithiadiene

A non-planar six-membered ring with the 'boat' configuration has been established for the molecular structure of 1,4-dithiadiene, C4H4S ~. Molecular parameters, which suggest a model of Cgv symmetry, are C-S----1.780.05 A, C----C = 1-290.05 A, C--C--S_--__ 124 and C-S-C~_--100% The crystals are orthorhombic, the space group is ~2 C2v-Cmc2~, and the unit cell dimensions are a ----