{μ-6,6′-Dimeth­oxy-2,2′-[ethane-1,2-diylbis(nitrilo­methyl­idyne)]diphenolato-1κ(4) O (6),O (1),O (1′),O (6′):2κ(4) O (1),N,N′,O (1′)}(methanol-1κO)(perchlorato-1κO)copper(II)sodium(I)

The mol­ecule of the title compound, [CuNa(C(18)H(18)N(2)O(4))(ClO(4))(CH(3)OH)], is almost planar with mean deviation of 5.2 (8)°. The coordination environment of the Cu(II) ion is distorted square-planar and it is N(2)O(2)-chelated by the 6,6′-dimeth­oxy-2,2′-[ethane-1,2-diylbis(nitrilo­methyl­idyne)]diphenolate Schiff base ligand. The Na atom is chelated by the four O atoms of the Schiff base ligand, and coordinated by a methanol mol­ecule and a perchlorate anion. The six-coordinate Na atom adopts a distorted octa­hedral coordination geometry. The O atoms of the perchlorate anion are disordered over two sites with site-occupancy factors of 0.697 (5) and 0.303 (5). O—H⋯O hydrogen bonding occurs.