Crystal structure of 4-[(5-methylisoxazol-3-yl)aminosulfonyl]anilinium 3,5-dinitrosalicylate

Abstract

The title molecular salt, C10H12N3O3S+·C7H3N2O7−, protonation occurs at the amino N atom attached to the benzene ring of sulfamethoxazole. In the anion, there is an intramolecular 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.

Keywords

• crystal structure
• sulfamethoxazolium
• 3,5-dinitrosalicylate
• molecular salt
• hydrogen bonding.