Interwoven Hydrogen-Bonding Networks in Benzene-1,3,5-triacetic Acid

The title compound, C₁₂H₁₂O₆, crystallized in the centrosymmetric space group P2₁/n. Each molecule is hydrogen-bonded to four others by ten hydrogen bonds forming a three-dimensional network. Two sets of such networks, which are not linked, comprise the structure. The carboxyl O atoms are ordered, as are the carboxyl H atoms. The best-fit acetic acid group planes make dihedral angles of 84.3 (1), 89.8 (2) and 58.0 (2)° with the best-fit benzene core plane.

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