Bis(2-amino-6-methylpyridinium) 3-nitrobenzene-1,2-dicarboxylate

Abstract

In the title molecular salt, 2C6H9N2+·C8H3NO62−, the cations are protonated at their pyridine N atoms. The cations and anion are linked by N—H...O and C—H...O hydrogen bonds and a π–π interaction [centroid-to-centroid distance = 3.7299 (13) Å]. In the crystal, N—H...O hydrogen bonds link the anions and cations into an infinite two-dimensional network parallel to (10-1). N—H...O hydrogen bonds generate R12(4), R21(6), R24(18) and R22(11) ring motifs. The structure also features weak C—H...O and C—H...π interactions, which lead to the formation of a three-dimensional network.

Keywords

• molecular salt
• crystal structure
• hydrogen bonding