Diaqua­sodium(I) perchlorate bis­[μ-2-(carboxyl­atomethyl­imino­meth­yl)phenolato]bis­[(3-methyl­pyridine)copper(II)]

In the title compound, [Na(H(2)O)(2)]ClO(4)·[Cu(2)(C(9)H(7)NO(3))(2)(C(6)H(7)N)(2)], the Cu(II) atom is coordinated by one N atom and two O atoms from a tridentate N-salicylideneglycinate Schiff base dianion and one N atom from a 3-methyl­pyridine ligand. Longer Cu⋯O contacts [2.680 (2) Å] complete an approximate square-based pyramidal coordination geometry around Cu(II), forming a dimeric complex across a centre of inversion. The dimeric complexes form stacks along the a axis, with Cu⋯O contacts of 3.332 (2) Å between them. The Na(+) cations and perchlorate anions lie on twofold rotation axes between the stacks. The former are coordinated by two disordered water mol­ecules (each with half-occupancy), and form Na⋯O contacts of 3.698 (3) Å to the perchlorate anions and Na⋯π contacts to neighbouring salicylideneglycinate ligands [shortest Na⋯C = 3.516 (3) Å].