catena-Poly[copper(II)-bis(μ-2-formyl-6-methoxyphenolato-κ4O2,O1:O1,O6)-[(methanol-κO)sodium]-μ-perchlorato-κ2O:O′]

In the title heterodinuclear complex, [CuNa(C8H7O3)2(ClO4)(CH3OH)]n, the CuII ion is five-coordinated by four O atoms from two 2-formyl-6-methoxyphenolate anions and one O atom from a perchlorate anion in a distorted square-pyramidal geometry. The Na+ ion is six-coordinated by four O atoms from two 2-formyl-6-methoxyphenolate ligands, one O atom of a methanol molecule and one O atom of a perchlorate anion. The perchlorate anions link the Na+ and CuII ions, forming a chain along [010]. O—H...O hydrogen bonds connect the chains. π–π interactions are present between the benzene rings [centroid–centroid distances = 3.566 (2) and 3.702 (2) Å]. The O atoms of the perchlorate anion are disordered over two sets of sites, with an occupancy ratio of 0.481 (8):0.519 (8)