摘要 : The title compound, C9H7NS, crystallizes as the thione tautomer with Z' = 8 ( four independent dimers with local inversion symmetry via two N - H ... S = C hydrogen- bond systems). The dimers are arranged in chains parallel to [(1... 展开 The title compound, C9H7NS, crystallizes as the thione tautomer with Z' = 8 ( four independent dimers with local inversion symmetry via two N - H ... S = C hydrogen- bond systems). The dimers are arranged in chains parallel to [(1) over bar 10], each chain being crystallographically independent. These chains are associated into layers via stacking of ring systems. The Z' value can be rationalized in terms of a factor 2 for dimer formation without crystallographic symmetry and an additional factor 4 for differing stacking environments. 收起