Acta Cryst. (2011). E67, o2155-o2156 [ doi:10.1107/S1600536811029370 ]
Abstract: The organic molecule in the title dihydrate, C18H19N3O6·2H2O, adopts a twisted U-shape with the major twists evident about the chiral C atom [the C-N-C-C torsion angle is -88.2 (4) °] and about the oxygen-benzyl bond [C-O-C-C = 74.2 (4) °]. The conformation about the imine bond [1.290 (4) Å] is E and an intramolecular O-HN hydrogen bond helps to establish the near coplanarity of the hydroxybenzene and hydrazine groups. The crystal packing features O-HO and N-HO hydrogen bonds, leading to two-dimensional supramolecular arrays in the ab plane with weak C-H connections between the arrays.
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