Benzyl N-(1-{N'-[(E)-2,3-dihy­droxy­benzyl­idene]hydrazinecarbon­yl}-2-hy­droxy­eth­yl)carbamate dihydrate

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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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Keywords: None Document Type: Research Article DOI: http://dx.doi.org/10.1107/S1600536811029370 Publication date: 1 de Janeiro de 2011