title: 3,5-Dimethyl-4-[(E)-(2-nitrophenyl)diazenyl]-1-(2,3,4,5,6-pentafluorophenyl)-1H-pyrazole.
abstract: The title compound, C(17)H(10)F(5)N(5)O(2), is described and compared with its 4-nitrophenyl isomer [Bustos, Sánchez, Schott, Alvarez-Thon & Fuentealba (2007). Acta Cryst. E63, o1138-o1139]. The title molecule presents its nitro group split into two rotationally disordered components, which in conjunction with the rotation of the `unclamped' rings constitute the main molecular differences. Packing is directed by a head-to-tail type `I' C-F...F-C interaction, generating double-chain strips running along [100]. These substructures are interlinked by a variety of weak F...F, O...F, F...π and O...π interactions.
authors.affiliation: Departamento de Ciencias Físicas, Universidad Andrés Bello, República 220, Santiago de Chile, Chile. lalvarez@unab.cl
authors.forename: Luis
authors.initials: L
authors.lastname: Alvarez Thon
authors.forename: Carlos
authors.initials: C
authors.lastname: Bustos
authors.forename: Fernando
authors.initials: F
authors.lastname: Diaz-Marín
authors.forename: Maria Teresa
authors.initials: MT
authors.lastname: Garland
authors.forename: Ricardo
authors.initials: R
authors.lastname: Baggio
mesh_terms: D018360:Crystallography, X-Ray; D006845:Hydrocarbons, Fluorinated / Q000737:chemistry*; D006860:Hydrogen Bonding; D015394:Molecular Structure; D009574:Nitro Compounds / Q000737:chemistry*; D011720:Pyrazoles / Q000737:chemistry*; D005466:Fluorocarbons
chemical_list: D006845:Hydrocarbons, Fluorinated; D009574:Nitro Compounds; D011720:Pyrazoles; C579181:3,5-dimethyl-4-((E)-(2-nitrophenyl)diazenyl)-1-(2,3,4,5,6-pentafluorophenyl)-1H-pyrazole; D005466:Fluorocarbons