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The title compound, C7H7N3, is an orthorhombic polymorph that crystallizes in the space group Pca21. The previously reported monoclinic form [Geiger & Parsons (2013) Acta Cryst. E69, o452] crystallizes in the space group P21/c (Z = 4). In the crystal, two independent HN—H
N![[triple bond]](/logos/entities/z-tbnd_rmgif.gif)
C hydrogen bonds link the molecules into chains along the a-glide plane. Two further independent HN—HNH2 hydrogen bonds join the chains, forming a three-dimensional network.
NC hydrogen bonds link the molecules into chains along the a-glide plane. Two further independent HN—HNH2 hydrogen bonds join the chains, forming a three-dimensional network.organic compoundsOpen access
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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—HN 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].
