title: Bis(3-nitro-phen-yl) sulfone.
abstract: The asymmetric unit of the title compound, C(12)H(8)N(2)O(6)S, an important diphenyl sulfone derivative, contains one half-mol-ecule; a mirror plane passes through the SO(2) group. The dihedral angle between the two symmetry-related benzene rings is 40.10 (13)°. An intra-molecular C-H⋯O hydrogen bond results in the formation of a five-membered ring, which adopts an envelope conformation.
authors.affiliation: Department of Applied Chemistry, College of Science, Nanjing University of Technology, Xinmofan Road No. 5, Nanjing 210009, People's Republic of China.
authors.forename: Wei
authors.initials: W
authors.lastname: Yao
authors.forename: Fang-Shi
authors.initials: FS
authors.lastname: Li
authors.forename: Da-Sheng
authors.initials: DS
authors.lastname: Yu
authors.forename: Mei-Juan
authors.initials: MJ
authors.lastname: Liu
authors.forename: Jin-Na
authors.initials: JN
authors.lastname: Zhu