The structure of the title compound, C3H6IN3S2, comprises a puckered ring t
hat associates to the I- anion via N-H . . .I interactions. In the asymmetr
ic unit, two I- anions reside on special positions (twofold rotation axes)
equivalent to one complete anion per cation. The cationic charge is delocal
ized between the two amines, as suggested by the similar bond lengths, acro
ss the heterocyclic N atom, between these two groups.