Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 9 (September 2012)

organic compounds

Acta Cryst. (2012). E68, o2749    [ doi:10.1107/S1600536812035854 ]

2-Amino-5-(4-carboxyl­atophen­yl)­pyridinium monohydrate

X.-H. Wei, H. Yan and W.-G. Lin

Abstract: The title compound, C12H10N2O2·H2O, crystallizes as a zwitterion in which the pyridine N atom is protonated and the carb­oxy -OH group is deprotonated. The benzene and pyridinium rings are inclined with a dihedral angle of 6.63 (5)° between them. In the crystal, inter­molecular O-H...O and N-H...O hydrogen-bonding inter­actions link adjacent mol­ecules into a two-dimensional double layered supra­molecular network.

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