title: Benzimidazolium 3,5-dicarb-oxy-benzoate trihydrate.
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.
authors: College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecule, Tianjin Normal University, Tianjin 300387, People's Republic of China.
authors: Hong
authors: H
authors: Chang
authors: You-Li
authors: YL
authors: Yang
authors: Xiu-Guang
authors: XG
authors: Wang
authors: En-Cui
authors: EC
authors: Yang
references: J Am Chem Soc. 2003 Jul 16;125(28):8456-7
references: 12848550
references: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references: 18156677