Crystal structure of {μ-6,6′-dimeth­oxy-2,2′-[ethane-1,2-diylbis(nitrilo­methanylyl­idene)]diphenolato}(meth­anol)(nitrato)nickel(II)sodium

In the molecular structure of the title compound, [NaNi(C18H18N2O4)(NO3)(CH3OH)], the Ni2+ ion has a slightly distorted square-planar coordination environment defined by two N and two O atoms which belong to a Schiff base ligand, viz. 6,6′-dimeth­oxy-2,2′-[ethane-1,2-diylbis(nitrilo­methanylyl­idene)]diphenolate. Seven O atoms form the coordination environment of the Na+ ion: four from the Schiff base ligand, two from a bidentate chelating nitrate anion and one O atom from a coordinating methanol mol­ecule. In the crystal, the bimetallic complexes are assembled into chains along the b-axis direction via weak C—H⋯O hydrogen-bond inter­actions. Neighbouring chains are in turn connected through bifurcated O—H⋯O hydrogen bonds that involve the coordinating methanol mol­ecules and the nitrate anions, and through π–π stacking inter­actions between phenyl rings of neighbouring mol­ecules.