title: Bis[4-(2-nitro-benzene-sulfonamido)-pyridinium] hexa-fluoro-silicate.
abstract: In the title compound, 2C(11)H(10)N(3)O(4)S(+)·SiF(6) (2-), the short C-N distance [1.386 (2) Å] is indicative of a slight conjugation of N with the π electrons of the pyridinium ring, and with those of the sulfonyl group. The dihedral angle between the benzene and pyridinium rings is 77.48 (7)°. The crystal structure is stabilized by N-H⋯F and C-H⋯F hydrogen bonds. The Si atom of the anion lies on a special position.
authors.affiliation: School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, People's Republic of China.
authors.forename: Ai-Rong
authors.initials: AR
authors.lastname: Wang