Published in
International Union of Crystallography, Acta Crystallographica Section E: Structure Reports Online, 5(69), p. o670-o670, 2013
DOI: 10.1107/s1600536813008763
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3,4-Diaminopyridinium hydrogen malonate
Journal article published in 2013 by
Surendra Thapa,
Sergiu Draguta,
Bhupinder Sandhu 
,
Mikhail Y.-U. Antipin,
Tatiana V. Timofeeva
,
Mikhail Y.-U. Antipin,
Tatiana V. Timofeeva
This paper is made freely available by the publisher.
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Abstract
In the title salt, C5H8N3 +·C3H3O4 −, the 3,4-diaminopyridinium cation is almost planar, with an r.m.s. deviation of 0.02 Å. The conformation of the hydrogen malonate anion is stabilized by an intramolecular O—H⋯O hydrogen bond, which generates an S(6) ring. In the crystal, N—H⋯O hydrogen bonds link cations and anions into layers parallel to the ab plane.