5,5'-Bithiazole and 2,5'-Bithiazole

Bithiazoles are known to be potential antibacterial, antifungal and anti-inflammatory agents and their conformations are of particular interest. Of the six possible isomers only three structures have so far been studied: 2,2'-bithiazole [Bolognesi, Catellini, Destri & Porzio (1987). Acta Cryst. C43, 1171-1173], 4,4'-bithiazole [Ratzimbazafy (1987). These de docteur es sciences, Univ. Aix-Marseille III, France] and 2,4'-bithiazole [Benali-Cherif, Pierrot, Baudrion & Aune (1995). Acta Cryst. C51, 72-75]. As a continuation of this series, we describe here the crystal structures of two other isomers, namely, 5,5'-bithiazole, C 6 H 4 N 2 S 2 , and 2,5'-bithiazole, C 6 H 4 N 2 S 2 . In both structures the bithiazole molecules are planar