title: catena-Poly[copper(II)-bis-(μ-2-formyl-6-meth-oxy-phenolato-κO,O:O,O)-[(methanol-κO)sodium]-μ-perchlorato-κO:O'].
abstract: In the title heterodinuclear complex, [CuNa(C(8)H(7)O(3))(2)(ClO(4))(CH(3)OH)](n), the Cu(II) ion is five-coordinated by four O atoms from two 2-formyl-6-meth-oxy-phenolate 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-meth-oxy-phenolate ligands, one O atom of a methanol mol-ecule and one O atom of a perchlorate anion. The perchlorate anions link the Na(+) and Cu(II) ions, forming a chain along [010]. O-H⋯O hydrogen bonds connect the chains. π-π inter-actions 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).
authors.affiliation: Key Laboratory of Chemical Engineering Processes & Technology for High-Efficiency Conversion, College of Heilongjiang Province, Heilongjiang University, Harbin 150080,  People's Republic of China.
authors.forename: Ting
authors.initials: T
authors.lastname: Gao
authors.forename: Po
authors.initials: P
authors.lastname: Gao
authors.forename: Hong-Feng
authors.initials: HF
authors.lastname: Li
authors.forename: Ju-Wen
authors.initials: JW
authors.lastname: Zhang
authors.forename: Li-Li
authors.initials: LL
authors.lastname: Xu