Crystal structure of tetra-iso-butyl-thiuram di-sulfide.

Tetra-kis(2-methyl-prop-yl)thio-per-oxy-dicarbonic di-amide, or tetra-iso-butyl-thiuram di-sulfide, CHNS, crystallizes in a general position in the triclinic space group -1 but shows pseudo- symmetry about the di-sulfide bond. The C-S-S-C torsion angle [-85.81 (2)°] and the dihedral angle between the two NCS mean planes [85.91 (5)°] are within the range observed for this compound type. Multiple intra- and inter-molecular S⋯H-C close contacts appear to play a role in assisting the specific conformation of the pendant isobutyl groups and the packing arrangement of mol-ecules within the cell. Tetra-iso-butyl-thiuram di-sulfide mol-ecules of one optical configuration form sheets in the plane of the and axes. Inversion centers exist between adjoining sheets, which stack along the axis and alternate in the handedness of their constituent mol-ecules.