title: catena-Poly[[bis-(μ-2-formyl-6-meth-oxy-phenolato-1:2κO,O:O,O)copper(II)sodium]-μ-tetra-fluorido-borate-1:1'κF:F'].
abstract: In the title heterodinuclear complex, [CuNa(BF(4))(C(8)H(7)O(3))(2)](n), the Cu(II) ion is four-coordinated by four O atoms of two 2-formyl-6-meth-oxy-phenolate ligands, giving rise to a square-planar geometry. The Na(+) ion is six-coordinated by four O atoms from the two ligands and two F atoms of two tetra-fluoridoborate anions. The tetra-fluoridoborate anion links the Na(+) ions, forming a one-dimensional structure along [001]. Three F atoms of the tetra-fluoridoborate anion are disordered over two sets of sites, with an occupancy ratio of 0.790 (11):0.210 (11).
authors.affiliation: School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080,  People's Republic of China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Yang
authors.forename: Po
authors.initials: P
authors.lastname: Gao
authors.forename: Jing-Lin
authors.initials: JL
authors.lastname: Yang
authors.forename: Hai-Ge
authors.initials: HG
authors.lastname: Hou
authors.forename: Ting
authors.initials: T
authors.lastname: Gao