A triclinic modification of 5,5'-dinitro-2,2'-dithio-dipyridine.

ABSTRACT: The asymmetric unit of the title compound, C(10)H(6)N(4)O(4)S(2), contains two independent but similar mol-ecules. 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 mol-ecules of the triclinic polymorph and the monoclinic polymorph, respectively]. The crystal structure of the title compound has two intra-molecular C-H?S inter-actions with average H?S distances of 2.69?Å, whereas this kind of inter-action is not evident in the monoclinic polymorph.

SUBMITTER: Brito I 

PROVIDER: S-EPMC2915177 | biostudies-literature | 2007 Dec

REPOSITORIES: biostudies-literature