# Hydrogen-bonded sheets in 2-(2-aminophenyl)-1H-benzimidazol-3-ium dihydrogen phosphate

Shylaja, S and Mahendra, KN and Varma, KBR and Narasimhamurthy, T and Rathore, RS (2008) Hydrogen-bonded sheets in 2-(2-aminophenyl)-1H-benzimidazol-3-ium dihydrogen phosphate. In: Acta Crystallographica Section C, 64 (7). pp. 361-363.

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## Abstract

The title salt, $C_{13}H_{12}N_3^+$ \cdot $H_2PO_4^-$, contains a nonplanar 2-(2-aminophenyl)-1H-benzimidazol-3-ium cation and two different dihydrogen phosphate anions, both situated on twofold rotation axes in the space group $C_2$. The anions are linked by O—H \cdot \cdot \cdot O hydrogen bonds into chains of $R_2^2$(8) rings. The anion chains are linked by the cations, via hydrogenbonding complementarities and electrostatic interactions,giving rise to a sheet structure with alternating rows of organic cations and inorganic anions. Comparison of this structure with that of the pure amine reveals that the two compounds generate characteristically different sheet structures. The anion–anion chain serves as a template for the assembly of the cations, suggesting a possible application in the design of solid-state materials.

Item Type: Journal Article Copyright of this article belongs to International Union of Crystallography. Division of Chemical Sciences > Materials Research Centre 06 Aug 2008 19 Sep 2010 04:48 http://eprints.iisc.ernet.in/id/eprint/15459