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Benzimidazolium 3,5-dicarb-oxy-benzoate trihydrate
Hong Chang1, You-Li Yang, Xiu-Guang Wang
1College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecule, Tianjin Normal University, Tianjin 300387, People's Republic of China.
Abstract:
Cocrystallization of benzimidazole with benzene 1,3,5-tricarb-oxy-lic acid in slightly basic medium afforded the title compound, C(7)H(7)N(2) (+)·C(9)H(5)O(6) (-)·3H(2)O, in which one of the imidazole N atom is protonated and one carb-oxy-lic group of aromatic acid is deprotonated. In the crystal structure, inter-molecular N-H⋯O hydrogen-bonding connects the two organic components into dimers, which are further linked into a three-dimensional network by O-H⋯O and N-H⋯O inter-actions between the water mol-ecules and the dimers.
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