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5-(1,3-Dithiolo[4,5-d][1,3]dithiol-2-yl-idene)-1,3-dithiolo[4,5-c][1,2,5]thia-diazole: an unsymmetrical tetra-thia-fulvalene with fused 1,2,5-thia-diazole and 1,3-dithiole rings. 2009

Masaaki Tomura, and Yoshiro Yamashita

The title unsymmetrical tetra-thia-fulvalene (TTF), C(7)H(2)N(2)S(7), contains fused 1,2,5-thia-diazole and 1,3-dithiole rings and is a component mol-ecule for conducting organic solids. The TTF mol-ecule is disordered crystallographically over two orientations related by an inversion center, where each site is half-occupied. The mol-ecule is almost planar with an r.m.s. deviation of 0.096 Å. In the crystal structure, mol-ecules are linked by short inter-molecular S⋯S inter-actions [3.47 (2), 3.507 (8) and 3.517 (13) Å].

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