(IUCr) Crystallography Journals Online

[Contents scheme]

Acta Cryst. (2013). E69, o319-o320
[ doi:10.1107/S1600536813002547 ]

5-Amino-6-methylquinolin-1-ium hydrogen malonate-malonic acid (2/1)

K. Thanigaimani, N. C. Khalib, S. Arshad and I. A. Razak

Abstract: The asymmetric unit of the title compound, 2C₁₀H₁₁N₂⁺·2C₃H₃O₄^-·C₃H₄O₄, consists of one 5-amino-6-methylquinolin-1-ium cation, one hydrogen malonate (2-carboxyacetate) anion and one-half molecule of malonic acid which lies on a twofold rotation axis. The quinoline ring system is essentially planar, with a maximum deviation of 0.062 (2) Å for all non-H atoms. In the anion, an intramolecular O-HO hydrogen bond generates an S(6) ring. In the crystal, the components are linked via N-HO and O-HO hydrogen bonds into layers parallel to the ac plane. The crystal structure also features weak C-HO hydrogen bonds and a [pi] - [pi] stacking interaction with a centroid-centroid distance of 3.8189 (10) Å.