Wang Yu-Tang, Gao De-Jiang
Acta Crystallogr Sect E Struct Rep Online. 2011 Aug 1;67(Pt 8):o1893. doi: 10.1107/S1600536811025050. Epub 2011 Jul 2.
In the title compound, C(6)H(9)N(2) (+)·C(7)H(4)NO(4) (-)·H(2)O, one amino group of diamino-benzene is protonated while one carb-oxy group of pyridine-2,6-dicarb-oxy-lic acid is deprotonated. In the anion, the CO(2) and CO(2)H groups make dihedral angles of 4.0 (5) and 8.7 (4)° with the pyridine ring. In the crystal, extensive N-H⋯O, N-H⋯N and O-H⋯O hydrogen bonds occur between anions, cations and water mol-ecules.
在标题化合物C(6)H(9)N(2) (+)·C(7)H(4)NO(4) (-)·H(2)O中,二氨基苯的一个氨基被质子化,而吡啶-2,6-二羧酸的一个羧基去质子化。在阴离子中,CO(2)和CO(2)H基团与吡啶环的二面角分别为4.0 (5)°和8.7 (4)°。在晶体中,阴离子、阳离子和水分子之间存在广泛的N-H⋯O、N-H⋯N和O-H⋯O氢键。