The structure of the title compound, C14H10N8S2, comprises two 1‐phenyl‐1H‐tetrazole‐5‐thiolate units linked by an S—S disulfide bridge. The C—S—S—C torsion angle is 81.9 (1)°. C—H...N hydrogen bonding, with C...N = 3.413 (4) Å and C—H...N = 147°, link the molecules into supramolecular chains in the crystal structure.
Key indicators: single-crystal X-ray study; T = 293 K; mean (C-C) = 0.004 Å; R factor = 0.059; wR factor = 0.139; data-to-parameter ratio = 13.9.In the title disulfide, (5-O 2 NC 5 H 3 N) 2 S 2 or C 10 H 6 N 4 O 4 S 2 , the molecule has a center of inversion. All bond lengths and angles are within normal ranges, and the molecules are linked into centrosymmetric R 2 2 (22) dimers by a simple C-HÁ Á ÁO interaction. In the crystal structure, there are no aromaticstacking and no C-HÁ Á Á(arene) interactions.
Poster Sessions two distinct shapes. X-ray diffraction has shown these two crystals to be different forms (orthorhombic and cubic) of a cationic cluster of composition [Cu21(sacc)6(phen)12] 12+. The penta-anionic saccharate adopts a different binding mode in each of the copper clusters. The spaces between the copper clusters are also of interest. The cubic form has a cell length of 73.7 Å and each unit cell contains a void with an approximate volume of 30,000Å 3 .
In title compound, C12H9IN2O2S, the nitro group is rotated slightly, by 8.91 (3)°, out of the plane of the aromatic ring to which it is bonded. Between the two aromatic rings the CSN plane is at a dihedral angle of 84.0 (7)° to the HNC plane. Molecules are linked by C—H⋯O interactions into a double helical supramolecular architecture. There are no iodo–nitro, π–π or C—H⋯π(arene) interactions.
The asymmetric unit of the title compound, C10H6N4O4S2, contains two independent but similar molecules. The structure is a triclinic polymorph of the monoclinic structure reported previously [Brito, Mundaca, Cárdenas, López-Rodríguez & Vargas (2007 ▶). Acta Cryst. E63, o3351–o3352]. The most obvious difference between the two polymorphs is the C—S—S—C torsion angle [−80.13 (16), −79.8 (2) and 0° for the two molecules of the triclinic polymorph and the monoclinic polymorph, respectively]. The crystal structure of the title compound has two intramolecular C—H⋯S interactions with average H⋯S distances of 2.69 Å, whereas this kind of interaction is not evident in the monoclinic polymorph.
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