4-Nitrophenyl κ-l-rhamnopyranoside hemihydrate

Abstract

In the title compound, C12H15NO7·0.5H2O, there are two independent mol-ecules in the asymmetric unit, together with one water molecule. The pyran-oside rings each have close to a 1 C 4 chair conformation and the nitro groups are almost coplanar with the benzene rings. The water mol-ecule links the two independent mol-ecules through O - H⋯O hydrogen bonds. All the hydroxyl groups are involved in hydrogen-bond inter-actions, giving rise to a three-dimensional network. © 2008 International Union of Crystallography.