Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 1 (January 2013)

organic compounds

Acta Cryst. (2013). E69, o92-o93    [ doi:10.1107/S1600536812050386 ]

2,3-Diamino­pyridinium hydrogen malonate

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

Abstract: In the title mol­ecular salt, C5H8N3+·C3H3O4-, the cation is essentially planar, with a maximum deviation of 0.005 (1) 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 cations and anions are connected via N-H...O hydrogen bonds and a weak C-H...O inter­action, forming layers parallel to the ab plane.

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