Acta Cryst. (2007). E63, o3878  [ doi:10.1107/S1600536807040962 ]

10,11-Dihydroxy-4-azatricyclo[5.2.2.0^2,6]undec-8-ene-3,5-dione

M. Krawiecka, I. Wawrzycka-Gorczyca, A. Galazka, J. Kossakowski and A. E. Koziol

Abstract: The succinimide ring of the title compound, C₁₀H₁₁NO₄, is endo-cis-substituted to the bicyclooctene system. The hydroxyl groups of the diol fragment are cis oriented, the O-C-C-O torsion angle being -20.7 (2)°. One of the OH groups is a double donor in two O-HO hydrogen bonds to the second group, forming both a weak intramolecular hydrogen bond [S(5) motif] and a centrosymmetric intermolecular dimer; the HO distances are 2.34 and 2.10 Å for the intra- and intermolecular bonds, respectively. Accompanying intermolecular O-HO_carbonyl, N-HO and C-HO hydrogen bonds link the molecules into tapes parallel to the b axis and layers perpendicular to the c axis.

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