Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, IUCrData called 2-Sulfanylidene-1,3-dithiolo[4,5-b]pyrazine-5,6-dicarbonitrile, Author is Tomura, Masaaki, which mentions a compound: 56413-95-7, SMILESS is N#CC1=NC(Cl)=C(Cl)N=C1C#N, Molecular C6Cl2N4, HPLC of Formula: 56413-95-7.
In the title compound, C7N4S3, the mol. entity consisting of a 1,3-dithiole-2-thione with a fused pyrazine ring is planar, with an r.m.s. deviation of 0.042 (3) Å from the least-squares plane. In the crystal, mols. are linked via short intermol. S···N contacts [3.251 (4) and 3.308 (3) Å] between the S atom of the thiocarbonyl group and N atoms of the cyano groups.
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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate