{μ-6,6'-Dimeth-oxy-2,2'-[ethane-1,2-diyl-bis(nitrilo-methyl-idyne)]diphenolato-1κO,O,O,O:2κO,N,N',O}(methanol-1κO)(perchlorato-1κO)nickel(II)sodium.

The mol-ecule of the title compound, [NaNi(C(18)H(18)N(2)O(4))(ClO(4))(CH(3)OH)], is almost planar, the maximum deviation from the molecular plane being 5.3 (1) Å. The Ni(2+) ion is N(2)O(2) coordinated by the Schiff base ligand, leading to a slightly distorted square-planar environment. The Na atom is chelated by the four O atoms of the Schiff base ligand and is coordinated by the O atoms of a methanol ligand and a perchlorate anion. The perchlorate ion is disordered over two sites with occupancies 0.723 (12):0.277 (12).