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Acta Cryst. (2013). E69, o1603-o1604
[ doi:10.1107/S1600536813026743 ]

2-Allyl-7-nitro-2H-indazole

A. Kouakou, E. M. Rakib, D. Spinelli, M. Saadi and L. El Ammari

Abstract: The asymmetric unit of the title compound, C10H9N3O2, contains two independent mol­ecules linked by a C-H...N hydrogen bond. Each mol­ecule has a similar conformation, being built up from fused five- and six-membered rings, each linked to an ally and nitro group, respectively. The indazole ring system makes dihedral angles of 2.7 (2) and 2.2 (2)°, respectively, with the plane through the nitro group. The allyl group is nearly perpendicular to the indazole system, as indicated by the N-N-C-C torsion angles of -75.3 (2) and -82.2 (2)°, this being the most important difference between the conformations of the two mol­ecules. In the crystal, mol­ecules are linked by C-H...O and [pi]-[pi] [inter-centroid distance = 3.6225 (8) Å] inter­actions to form a three-dimensional network.


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