Acta Crystallographica Section E

Volume 67, Part 8 (August 2011)

organic compounds

xu5250 scheme

Acta Cryst. (2011). E67, o1893 [ doi:10.1107/S1600536811025050 ]

2-Aminoanilinium 6-carboxypicolinate monohydrate

Y.-T. Wang and D.-J. Gao

Abstract: In the title compound, C₆H₉N₂⁺·C₇H₄NO₄^-·H₂O, one amino group of diaminobenzene is protonated while one carboxy group of pyridine-2,6-dicarboxylic acid is deprotonated. In the anion, the CO₂ and CO₂H groups make dihedral angles of 4.0 (5) and 8.7 (4)° with the pyridine ring. In the crystal, extensive N-HO, N-HN and O-HO hydrogen bonds occur between anions, cations and water molecules.


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