Crystal structure of potassium (1S)-d-lyxit-1-ylsulfonate monohydrate

Abstract

The title compound, K+·C5H11O8S−·H2O [systematic name: potassium (1S,2S,3S,4R)-1,2,3,4,5-pentahydroxypentane-1-sulfonate monohydrate], formed by reaction of d-lyxose with potassium hydrogen sulfite in water, crystallizes as colourless square prisms. The anion has an open-chain structure in which the S atom, the C atoms of the sugar chain and the oxygen atom of the hydroxymethyl group form an essentially all-trans chain with the corresponding torsion angles lying between 178.61 (12) and 157.75 (10)°. A three-dimensional bonding network exists in the crystal structure involving coordination of two crystallographically independent potassium ions by O atoms (one cation being hexa- and the other octa-coordinate, with each lying on a twofold rotation axis), and extensive intermolecular O—H...O hydrogen bonding.

Keywords

• crystal structure
• D-lyxose bisulfite adduct
• potassium hydrogen sulfite
• potassium metabisulfite
• hydrogen bonding