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The non-H atoms in the structure of the title molecule, C7H7N3, are almost coplanar (r.m.s. deviation = 0.018 Å). The two amine groups each donate two and accept one weak N—H
N hydrogen bonds. N—HN hydrogen bonding between the amine and nitrile groups results in chains parallel to [101] in the crystal structure. The chains are cross-linked by N—HN hydrogen bonds between amine groups, giving rise to an infinite three-dimensional network.
N hydrogen bonds. N—HN hydrogen bonding between the amine and nitrile groups results in chains parallel to [101] in the crystal structure. The chains are cross-linked by N—HN hydrogen bonds between amine groups, giving rise to an infinite three-dimensional network.organic compoundsOpen access
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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—HN![[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.
