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The structure of the antioxidant 2,3,4-trihydroxybenzoic acid dihydrate

Sharp, Andrew J.; Prior, Timothy J.

Authors

Andrew J. Sharp



Abstract

The structure of 2,3,4-trihydroxybenzoic acid dihydrate has been determined at 120 K from a twinned crystal. The compound crystallizes in the centrosymmetric space group P1̄ with Z = 2 and unit cell parameters a = 6.6165(14), b = 7.2341(14), c = 9.716(2) Å , α = 75.632(16), β = 76.818(17), γ = 77.520(16)°. There is extensive hydrogen bonding within the structure and evidence for intermolecular π-π interactions between parallel aromatic rings. The compound does not display the familiar carboxylic acid hydrogen-bonded dimer found in many similar compounds. The 2,3,4-trihydroxybenzoic acid molecules are however arranged in a head-to-tail chain and linked through two water molecules in an unusual intermolecular hydrogen bonding motif. © Springer Science+Business Media, LLC 2010.

Journal Article Type Article
Publication Date 2010-07
Journal JOURNAL OF CHEMICAL CRYSTALLOGRAPHY
Print ISSN 1074-1542
Electronic ISSN 1572-8854
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 40
Issue 7
Pages 630-633
APA6 Citation Sharp, A. J., & Prior, T. J. (2010). The structure of the antioxidant 2,3,4-trihydroxybenzoic acid dihydrate. Journal of chemical crystallography, 40(7), 630-633. https://doi.org/10.1007/s10870-010-9708-8
DOI https://doi.org/10.1007/s10870-010-9708-8
Keywords Spectroscopy; Structural Biology; Condensed Matter Physics