A monoclinic polymorph of 1,2-bis­[(1-methyl-1H-tetra­zol-5-yl)sulfan­yl]ethane (BMTTE)

The synthesis and crystal structure of a monoclinic (P2(1)/c) polymorph of the title compound, C(6)H(10)S(2)N(8), are reported. The mol­ecule has pseudo-twofold rotational symmetry, with the tetra­zole rings being inclined to one another by 5.50 (6)°. In the crystal, mol­ecules are linked by C—H⋯N hydrogen bonds, forming chains propagating along [101] and enclosing R (2) (2)(20) ring motifs. The chains are linked by offset π–π inter­actions involving the tetra­zole rings [inter­centroid distances vary from 3.3567 (7) to 3.4227 (7) Å], forming layers parallel to the ac plane. The crystal structure of the triclinic polymorph (P [Image: see text]) has been described previously [Li et al. (2011 ▸). Acta Cryst. E67, o1669].