Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 3 (March 2013)

organic compounds

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-H...O hydrogen bond generates an S(6) ring. In the crystal, the components are linked via N-H...O and O-H...O hydrogen bonds into layers parallel to the ac plane. The crystal structure also features weak C-H...O hydrogen bonds and a [pi]-[pi] stacking inter­action with a centroid-centroid distance of 3.8189 (10) Å.

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