title: 1,3-Diammonio-1,2,3-tride-oxy-cis-inositol sulfate.
abstract: In the crystal structure of the title compound, C(6)H(16)N(2)O(3) (2+)·SO(4) (2-), each cation forms three O-H⋯O and five N-H⋯O hydrogen bonds to six neighbouring sulfate anions. In addition, interlinking of the cations by N-H⋯O interactions is also observed. The cyclo-hexane ring adopts a chair conformation with two axial hy-droxy groups. Although the separation of 2.928 Å is almost ideal for a hydrogen bond, intra-molecular hydrogen bonding between these two hy-droxy groups is not observed.
authors.affiliation: Fachrichtung Chemie, Universität des Saarlandes, Postfach 151150, D-66041 Saarbrücken,  Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Neis
authors.forename: Günter J
authors.initials: GJ
authors.lastname: Merten
authors.forename: Kaspar
authors.initials: K
authors.lastname: Hegetschweiler