Received 12 July 2010
In the crystal structure of the title compound, C8H12N+·C3H3O4-, the hydrogen malonate anions are linked into infinite chains parallel to the b axis by intermolecular O-HO hydrogen bonds of the type COO-HO2C in a head-to-tail fashion. The 4-ethylanilinium cations link adjacent anion chains by intermolecular N-HO hydrogen bonds into a two-dimensional network parallel to the b and c axes.
Data collection: CrystalClear (Rigaku, 2005); cell refinement: CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: KJ2151 ).
D-HW thanks the China Postdoctoral Science Foundation funded project (20090451147), Jiangsu Planned Projects for Postdoctoral Research Funds (0802003B) and the SEU Major Postdoctoral Research Funds (3212000901) for financial support.
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