Acta Cryst. (2002). E58, o1045-o1047  [ doi:10.1107/S1600536802014034 ]

5,5'-Dimethyl-2,2'-dithiodi-1,3,4-thiadiazole

J.-L. Song, W.-B. Zhou, H.-Y. Zeng and Z.-C. Dong

Abstract: The title compound, C₆H₆N₄S₄, is formed through the thionato S-S bonding of parent 2-mercapto-5-methyl-1,3,4-thiadiazole molecules, following the deprotonation of thiol groups in a mixed solvent. The title compound crystallizes in the monoclinic system, space group C2/c. The S-S distance is 2.028  (1)  Å, typical of a single bond. The two 1,3,4-thiadiazole rings in the molecule each remain planar, with a dihedral angle of 70.5  (1)  Å, and are related by a twofold rotation axis through the middle of the S2-S2 bond. The geometric parameters for the parent ligand are also reported, to demonstrate the influence of deprotonation on the ligand dimensions.

Online 6 September 2002

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