K. Thanigaimani, N. C. Khalib, S. Arshad
Nov 24, 2012
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Journal
Acta Crystallographica Section E: Structure Reports Online
Abstract
In the 4-methoxyquinoline-2-carboxylate anion of the title salt, C5H8N3 +·C11H8NO3 −, the dihedral angle between the quinoline ring system and the carboxylate group is 16.54 (15)°. In the crystal, the cations and anions are linked via N—H⋯O and N—H⋯N hydrogen bonds, forming a centrosymmetric 2 + 2 aggregate with R 2 2(9) and R 4 2(8) ring motifs. These units are further connected via N—H⋯O hydrogen bonds into a layer parallel to the bc plane. The crystal structure is also stabilized by weak C—H⋯O hydrogen bonds and π–π interactions between pyridine rings [centroid–centroid distance = 3.5886 (8) Å] and between pyridine and benzene rings [centroid–centroid distance = 3.6328 (8) Å].