Poly[bis­(μ2-5-thioxo-1H-1,2,4-thia­diazole-3-thiol­ato-κ2S3:S5)zinc(II)]

2007 
In the crystal structure of the neutral polymeric title compound, [Zn(C2HN2S3)2]n, the ZnII atom is located at a site of 2 symmetry and is coordinated by four S atoms of four symmetry-related 5-thioxo-1H-1,2,4-thia­diazole-3-thiol­ate ligands in a tetra­hedral geometry, with S—Zn distances of 2.3343 (6) and 2.3560 (6) A, and S—Zn—S angles ranging from 103.78 (3) to 112.572 (17)°. Each of the ligands bridges two ZnII atoms through two terminal S atoms, leading to the formation of a chiral two-dimensional layer containing homochiral helical chains. However, in the crystal structure, adjacent layers have opposite chirality and are connected into a three-dimensional network by N—H⋯S hydrogen bonds.
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