2,3-Diaminopyridinium 2-hydroxybenzoate

In the title molecular salt, C5H8N3+·C7H5O3−, the 2,3-diaminopyridinium cation is essentially planar, with a maximum deviation of 0.006 (2) Å. In the crystal, adjacent cations and anions are linked by pairs of N—H...O hydrogen bonds, generating R22(8) loops. These dimers are linked by further N—H...O hydrogen bonds and C—H...O interactions to form sheets lying parallel to (001). A typical intramolecular O—H...O hydrogen bond is also observed in the salicylate (2-hydroxybenzoate) anion, which generates an S(6) ring. The crystal structure also features π–π stacking interactions between the pyridinium rings of the cations, with a centroid–centroid distance of 3.5896 (15) Å.

Abstract licence: CC BY

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