Yao Wei, Li Fang-Shi, Yu Da-Sheng, Liu Mei-Juan, Zhu Jin-Na
Department of Applied Chemistry, College of Science, Nanjing University of Technology, Xinmofan Road No. 5, Nanjing 210009, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2008 Jul 5;64(Pt 8):o1378. doi: 10.1107/S160053680801917X.
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.