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Abstract <p>Peroxosolvates of the following heteroaromatic carboxylic acids are prepared and structurally characterized: (<i>R</i>,<i>S</i>)-2,2′-bipyridine-3,3′-dicarboxylic acid 1,1′-dioxide C<sub>12</sub>H<sub>8</sub>N<sub>2</sub>O<sub>6</sub>·H<sub>2</sub>O<sub>2</sub> (<b>1</b>) and a quinolone antibiotic oxolinic acid C<sub>13</sub>H<sub>11</sub>N<sub>1</sub>O<sub>5</sub>·H<sub>2</sub>O<sub>2</sub> (<b>2</b>). In both solvate structures, peroxide molecules participate only in two HOOH⋯O hydrogen bonds with very strong proton-acceptor groups of coformers: oxygen atoms of pyridone and <i>N</i>-oxide groups. The same O atoms form strong hydrogen bonds with carboxyl groups. The possibility of preparing crystal adducts of H<sub>2</sub>O<sub>2</sub> with acidic coformers is confirmed.</p>

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Crystal Structure of Heteroaromatic Carboxylic Acid Peroxosolvates

  • 期刊论文

  • 发表日期：

    2026年1月1日

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  • M. A. Kiseleva,
  • P. V. Prikhodchenko,
  • A. V. Churakov

摘要

Abstract

Peroxosolvates of the following heteroaromatic carboxylic acids are prepared and structurally characterized: (R,S)-2,2′-bipyridine-3,3′-dicarboxylic acid 1,1′-dioxide C12H8N2O6·H2O2 (1) and a quinolone antibiotic oxolinic acid C13H11N1O5·H2O2 (2). In both solvate structures, peroxide molecules participate only in two HOOH⋯O hydrogen bonds with very strong proton-acceptor groups of coformers: oxygen atoms of pyridone and N-oxide groups. The same O atoms form strong hydrogen bonds with carboxyl groups. The possibility of preparing crystal adducts of H2O2 with acidic coformers is confirmed.