Acta Cryst. (2009). E65, o280  [ doi:10.1107/S1600536809000397 ]

-D-Altrose

Y. Watanabe, H. Yoshida, K. Takeda, T. Ishi and S. Kamitori

Abstract: The molecule of the title compound, C₆H₁₂O₆, [systematic name: (2R,3S,4R,5R,6R)-6-(hydroxymethyl)oxane-2,3,4,5-tetrol] adopts a ⁴C₁ chair conformation with the anomeric hydroxyl group in the equatorial position. All hydroxyl groups act as donors and acceptors in hydrogen bonding and the molecule is involved in ten intermolecular O-HO interactions [OO = 2.672 (5)-2.776 (4) Å] with eight neighbouring molecules. Two independent O-HO-H helices extending along the z axis are found in this structure.

Online 10 January 2009

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