Acta Cryst. (2010). E66, o2023-o2024 [ doi:10.1107/S1600536810027273 ]
Abstract: The carbamate and hydrazone groups in the title compound, C18H18N4O6, are approximately orthogonal [dihedral angle = 83.3 (4)°], and the carbonyl groups are effectively anti [O=CC=O torsion angle = -116.2 (7)°]. The conformation about the imine bond [1.295 (11) Å] is E. The crystal packing is dominated by O-HO and N-HO hydrogen bonding, which leads to two-dimensional arrays in the ab plane.
Online 14 July 2010
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