Aminoethylammonium Tartrate

Abstract

The structure of aminoethylammonium tartrate, C2H9N2+.C4H5O6-, is ionic. Ethylenediamine forms a very stable salt with tartaric acid, similar to C2H10N22+.2HPO(4)(2-).6H(2)O [Averbuch-Pouchot, Durif & Guitel (1987). Acta Cryst. C43, 1896-1898] and C2H10N22+.2C(4)H(5)O(6)(-).2H(2)O [Perez, (1977). Acta Cryst. B33, 1083-1087]. The protonated ethylenediamine monocations are linked to the tartrate anions by strong N-H ... O hydrogen bonds [N ... O 2.921(4), H ... O 2.083(4) Angstrom, N-H ... O 156.8(3)degrees]. The bond lengths and angles are comparable with corresponding values observed in related molecules.