(Acetato-κO)(2-{[2-(dimethyl-amino)-ethyl-imino](phen-yl)meth-yl}-5-methoxy-phenolato-κN,N',O)copper(II)

The Cu(II) atom in the title complex, [Cu(C(18)H(21)N(2)O(2))(C(2)H(3)O(2))], is tetra-coordinated by two N atoms and two O atoms, of which one O atom is attributed to the acetate group and the other atoms are from the tridentate salicylideneiminate ligand, forming a slight distorted square-planar environment. The other acetate O atom exhibits a very weak intra-molecular inter-action toward the Cu atom, the Cu-O distance of 2.771 (2) Å being shorter than the van der Waals radii for Cu and O atoms (2.92 Å). Furthermore, there are weak inter-molecular inter-actions, in which the bonding O atom of the acetate group can bridge to the Cu atom of another complex, and the distance of 2.523 (2) Å is about 0.4 Å shorter than the van der Waals Cu-O distance in other crystal structures.