title: 1-Allyl-6-nitro-1H-indazole.
abstract: The fused five- and six-membered rings in the title mol-ecule, C10H9N3O2, are essentially coplanar, the largest deviation from the mean plane being 0.012 (1) Å for the C atom linked to the nitro group. The fused-ring system makes a dihedral angle of 11.34 (6)° with the nitro group, leading to a syn-periplanar conformation. The plane through the atoms forming the allyl group is nearly perpendicular to the indazole fused-ring system, as indicated by the dihedral angle of 73.3 (5)°. In the crystal, each mol-ecule is linked to its symmetry equivalent about the center of inversion by pairs of non-classical C-H⋯O hydrogen bonds, forming an extended tape motif parallel to the (-12-1) plane.
authors.affiliation: Laboratoire de Chimie Organique Hétérocyclique URAC21, Faculté des Sciences, Université Mohammed V-Agdal, Avenue Ibn Battouta, BP 1014, Rabat, Morocco.
authors.forename: Nabil
authors.initials: N
authors.lastname: El Brahmi
authors.forename: Mohammed
authors.initials: M
authors.lastname: Benchidmi
authors.forename: El Mokhtar
authors.initials: el M
authors.lastname: Essassi
authors.forename: Sonia
authors.initials: S
authors.lastname: Ladeira
authors.forename: Lahcen
authors.initials: L
authors.lastname: El Ammari