{2-[(2-Acetyl­hydrazin-1-yl­idene)methyl-κ(2) N (1),O]-6-methoxy­phenolato-κO (1)}(nitrato-κO)copper(II) monohydrate

In the title complex, [Cu(C(10)H(11)N(2)O(3))(NO(3))]·H(2)O, prepared from the Schiff base N′-(3-meth­oxy-2-oxidobenzyl­idene)­acetohydrazide, the Cu(II) atom is coordinated by two O atoms and one N atom from the ligand and one O atom from a nitrate group in a distorted square-planar geometry. The Cu(II) atom has a weak inter­action with another O atom of the nitrate group. The two O atoms of the tridentate Schiff base ligand are in a trans arrangement. O—H⋯O and N—H⋯O hydrogen bonds involving the uncoordinated water mol­ecule are observed.