title: 3,4-Dinitro-1H-pyrazole benzene 0.25-solvate.
abstract: The asymmetric unit of the title compound, 4C(3)H(2)N(2)O(4)·C(6)H(6), contains two independent dinitro-pyrazole mol-ecules and half a benzene solvent mol-ecule, which lies on a crystallographic inversion centre. Each pyrazole ring is essentially planar (mean deviations of 0.009 and 0.002 Å), with the two nitro groups rotated out of the plane [dihedral angles = 11.7 (2)/31.1 (1) and 21.8 (2)/25.0 (1)° for the two mol-ecules].
authors.affiliation: School of Chemical Engineering and Environment, North University of China, Taiyuan, People's Republic of China.
authors.forename: Yong-Xiang
authors.initials: YX
authors.lastname: Li
authors.forename: Shan
authors.initials: S
authors.lastname: Du
authors.forename: Jian-Long
authors.initials: JL
authors.lastname: Wang