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Acta Cryst. (2005). E61, o4185-o4187 [ doi:10.1107/S1600536805037505 ]
Abstract: 1H-Benzimidazole-2-carboxylic acid crystallizes as the monohydrate, C8H6N2O2·H2O, and the organic molecule exists in a zwitterionic form, viz. 1H-benzimidazolium-2-carboxylate. Hydrogen bonds connect the molecules of acid and water into a two-dimensional network.
Online 19 November 2005
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