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Updated: Jul 11, 2025

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Published on: March 24, 2018
Crystal structure of 2-methyl-1H-imidazol-3-ium 3,5-di-carb-oxy-benzoate
Sofiia Baletska1, Simone Techert2,3, Jose de Jesus Velazquez-Garcia2
1School of Physics, V. N. Karazin Kharkiv National University, 4 Svobody Sq., Kharkiv 61022, Ukraine.
Abstract:
The structure of the title salt, C4H7N2 +·C9H5O6 - (1), is reported. The compound is built from a protonated 2-methyl-imidazole and a singly deprotonated trimesic acid. Detailed analysis of bond distances and angles for both ions reveals subtle differences compared with their neutral mol-ecule counterpart. Analysis of the crystal packing in compound 1 reveals the formation of undulating chains by the ions through hydrogen bonding. The chains stack along the b axis through π-π inter-actions and inter-connect with other chains in an out-of-phase arrangement along the ac plane through further hydrogen-bonding inter-actions.
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