The unit cell of the title crystal, C15H6N4O9S4.CH3NO2, contains two B
NPT-DTO molecules and two co-crystallized nitromethane solvent molecul
es. A BNPT-DTO molecule comprises one conjugated 4,5-dimercapto-1,3-di
thiol-2-one plane (analogous to 4,5-dimercapto-1,3-dithiole-2-thione,
DMIT) and two phenyl planes which are almost perpendicular to the 'DMI
T' plane. The dihedral angle between the phenyl planes is 45.8 degrees
. The crystal packing is stabilized by a number of intermolecular inte
ractions in addition to normal van der Waals interactions.