Synthesis, crystal structure, and Hirshfeld surface analysis of 1,3-dihydro-2<i>H</i>-benzimidazol-2-iminium 3-carboxy-4-hydroxybenzenesulfonate
Salmon MukhammadievUzbekistan Japan Innovation Center of Youth, University str. 2B, Tashkent, 100095, UzbekistanSarvar RajabovNational University of Uzbekistan named after Mirzo Ulugbek University str 4 Tashkent 100174 UzbekistanAkmaljon TojiboevUniversity of Geological Sciences, Olimlar str. 64, Tashkent 100125, UzbekistanJamshid AshurovInstitute of Bioorganic Chemistry of Academy of Sciences of Uzbekistan, Mirzo, Ulug'bek st. 83, Tashkent 100125, UzbekistanSardor MurodovNational University of Uzbekistan named after Mirzo Ulugbek University str 4 Tashkent 100174 UzbekistanShahlo DaminovaNational University of Uzbekistan named after Mirzo Ulugbek University str 4 Tashkent 100174 Uzbekistan
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The asymmetric unit of the title salt, C 7 H 8 N 3 + ·C 7 H 5 O 6 S − , comprises two 1,3-dihydro-2 H -benzimidazol-2-iminium cations and two 2-hydroxy-5-sulfobenzoate anions ( Z ′ = 2). In the crystal, the molecules interact through N—H...O, O—H...O hydrogen bonds and C—O...π contacts. The hydrogen-bonding interactions lead to the formation of layers parallel to (\overline{1}01). Hirshfeld surface analysis revealed that H...H contacts contribute to most of the crystal packing with 38.9%, followed by H...O contacts with 36.2%.
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