Acta Cryst. (2012). E68, o2605 [ doi:10.1107/S1600536812033697 ]
Abstract: In the structure of the title salt C12H11N2S+·I-, the methylsulfanyl group of the cation is nearly coplanar with the perimidine rings, as indicated by the C-S-C-N torsion angles of 2.9 (5) and -177.2 (3)°, respectively. The (S)C-N bond lengths in the heterocyclic ring are approximately equal [1.325 (5) and 1.326 (6) Å] suggesting a degree of delocalization. In the crystal, cations and anions are linked via two discrete N-H
I hydrogen bonds, forming chains along the b axis.
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