5-(13-Dithiolo45-d13dithiol-2-yl­idene)-13-dithiolo45-c125thia­diazole: an unsymmetrical tetra­thia­fulvalene with fused 125-thia­diazole and 13-dithiole rings

摘要

The title unsymmetrical tetra­thia­fulvalene (TTF), C7H2N2S7, contains fused 1,2,5-thia­diazole and 1,3-dithiole rings and is a component mol­ecule for conducting organic solids. The TTF mol­ecule is disordered crystallographically over two orientations related by an inversion center, where each site is half-occupied. The mol­ecule is almost planar with an r.m.s. deviation of 0.096 Å. In the crystal structure, mol­ecules are linked by short inter­molecular S⋯S inter­actions [3.47 (2), 3.507 (8) and 3.517 (13) Å].