Crystal structure of 2,3,5,6-tetra­kis[(methyl­sulfan­yl)meth­yl]pyrazine

The title compound, C(12)H(20)N(2)S(4), synthesized by the reaction of 2,3,5,6-tetra­kis­(bromo­meth­yl)pyrazine with sodium methane­thiol­ate, crystallizes with a half -mol­ecule in the asymmetric unit. The whole mol­ecule is generated by inversion symmetry; the inversion centre being located in the centre of the pyrazine ring. The mol­ecule has an S-shaped conformation with two (methyl­sulfan­yl)methyl substituent arms directed above the plane of the pyrazine ring and two below. The C(H(3))—S—C(H(2))—C(aromatic) torsion angles are 70.47 (18) and −67.65 (17)°, respectively. In the crystal, mol­ecules are linked via weak C—H⋯S hydrogen bonds, forming chains along [001] and enclosing R (2) (2)(12) ring motifs. The chains are linked by further weak C—H⋯S hydrogen bonds, forming sheets lying parallel to (101).