title: Crystal structure of 4-[(5-methyl-isoxazol-3-yl)amino-sulfon-yl]anilinium 3,5-di-nitro-salicylate.
abstract: The title mol-ecular salt, C10H12N3O3S(+)·C7H3N2O7 (-), protonation occurs at the amino N atom attached to the benzene ring of sulfamethoxazole. In the anion, there is an intra-molecular O-H⋯O hydrogen bond and the cation is linked to the anion by an N-H⋯O hydrogen bond. In the extended structure, the cations and anions are linked via N-H⋯O, N-H⋯N and C-H⋯O hydrogen bonds, forming a three-dimensional framework.
authors.affiliation: School of Chemistry, Bharathidasan University, Tiruchirappalli 620 024, Tamil Nadu, India.
authors.forename: Sevaiyan
authors.initials: S
authors.lastname: Malathy
authors.affiliation: School of Chemistry, Bharathidasan University, Tiruchirappalli 620 024, Tamil Nadu, India.
authors.forename: Jeyaraman Selvaraj
authors.initials: JS
authors.lastname: Nirmalram
authors.affiliation: School of Chemistry, Bharathidasan University, Tiruchirappalli 620 024, Tamil Nadu, India.
authors.forename: Packianathan Thomas
authors.initials: PT
authors.lastname: Muthiah
keywords: 3,5-di­nitro­salicylate; crystal structure; hydrogen bonding.; mol­ecular salt; sulfamethoxazolium