Molecules of the title compound (BPDH2, C14H14N4S2) belong to the C-i
point group, with only half of the molecule in an asymmetric unit. The
molecule is planar lo within 0.006 Angstrom, with intramolecular N-H
... S and N-H ... N hydrogen bonds [H ... N 2.10(4) and H ... S 2.48 (
4) Angstrom].