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organic compounds
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The title compound, C16H11ClN2S2, co-crystallizes with a small amount of the 5-chloro- isomer. The ratio of 6-chloro- to 5-chloro- isomers is 0.969 (2):0.031 (2). One thiophen-2-yl substitutent displays rotational disorder with 80.6 (4)% of the molecules exhibiting the major orientation. In the crystal, weak C—H
N and C—HS hydrogen-bonding interactions result in chains of molecules parallel to [001].
N and C—HS hydrogen-bonding interactions result in chains of molecules parallel to [001].organic compoundsOpen access
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There are two independent molecules in the asymmetric unit of the title compound, C16H11ClN2S2. The structure exhibits rotational disorder of the 2-thiophen-2-yl substituent in each of the unique molecules with a major:minor component ratio of 0.927 (2):0.073 (2). For one of the symmetry-unique molecules, 6.0 (2)% of the sites are occupied by the 6-chloro-isomer. The major component thiophene rings make dihedral angles of 38.90 (12) and 36.32 (11)° with the benzimidazole rings in the two independent molecules. In the crystal, molecules are linked into chains parallel to [100] via weak C—HN interactions.
N interactions. 
