title: Crystal structure of potassium (1R)-d-ribit-1-yl-sulfonate.
abstract: The title compound, K(+)·C5H11O8S(-) [systematic name: potassium (1R,2R,3R,4R)-1,2,3,4,5-penta-hydroxy-pentane-1-sulfonate], formed by reaction of d-ribose with potassium hydrogen sulfite in water, crystallizes as colourless plates. The anion has an open-chain structure in which the S atom and the C atoms of the sugar chain, excepting that of the hy-droxy-methyl group, form an essentially all-trans chain; the C atom of the hy-droxy-methyl group lies in a gauche relationship with the three contiguous C atoms. Through complex cation coordination (through seven oxygen atoms of six different anions) and inter-molecular O-H⋯O hydrogen bonding, a three-dimensional bonding network exists in the crystal structure.
authors.affiliation: School of Chemistry, University of East Anglia, Norwich NR4 7TJ, England.
authors.forename: Alan H
authors.initials: AH
authors.lastname: Haines
authors.affiliation: School of Chemistry, University of East Anglia, Norwich NR4 7TJ, England.
authors.forename: David L
authors.initials: DL
authors.lastname: Hughes
keywords: crystal structure; d-ribose bis­ulfite adduct; potassium hydrogen sulfite; potassium metabisulfite