Synthesis and structure of ()-3,4,5-trihy-droxy-'-(3,4,5-tri-meth-oxy-benzyl-idene)benzohydrazide monohydrate.

In the structure of the title compound, CHNO·HO, hydrogen bonds link three mol-ecules to the water mol-ecule. Additional hydrogen-bonding inter-actions connect two mol-ecules the amide nitro-gen donor and two meth-oxy oxygen acceptors. This three-dimensional hydrogen-bond network has no particular directionality, and a slight disorder of two meth-oxy groups is observed. According to force-field calculations, weaker but more extended van der Waals inter-actions show a larger stabilization effect than the hydrogen-bond inter-actions, while hydrogen-bond analysis suggests that polymorphs of the compound may be found in the future.