1,2-Bis(2-nitrophenyl)disulfane

In the title compound, C12H8N2O4S2, the dihedral angle between the two benzene rings is 67.82 (9)°. In the crystal, weak intermolecular C—H⋯O hydrogen bonds link the molecules.

In the title compound, C 12 H 8 N 2 O 4 S 2 , the dihedral angle between the two benzene rings is 67.82 (9) . In the crystal, weak intermolecular C-HÁ Á ÁO hydrogen bonds link the molecules.
In the title compound (I), (Fig. 1), the bond lengths an angles are normal and are comparable to the values observed in similar compounds (Glidewell, et al., 2000).
In the crystal structure, the S-S bond length in the molecule is 2.0584 (12)° (S1-S2), showing the single bond character. Meanwhile, the dihedral angle between the benzene rings (C1-C6) and (C7-C12) is 67.82 (9)°, indicating that the two aromatic ring planes are not coplanar.
Moreover, the crystal supramolecular structure was built from the connections of intermolecular weak C-H···O hydrogen bonds interactions (Fig. 2).

S3. Refinement
All H atoms were placed in geometrically idealized positions (C-H 0.93 Å) and treated as riding on their parent atoms, with U iso (H) = 1.2U eq (C).   Refinement. Refinement of F 2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F 2 , conventional R-factors R are based on F, with F set to zero for negative F 2 . The threshold expression of F 2 > σ(F 2 ) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F 2 are statistically about twice as large as those based on F, and R-factors based on ALL data will be even larger.