title: Poly[bis-(μ-2,6-dimethyl-pyridinium-3,5-dicarboxyl-ato-κO:O)copper(II)].
abstract: In the title coordination polymer, [Cu(C(9)H(8)NO(4))(2)](n), the Cu atom, located on a twofold rotation axis, is four coordinate in a distorted square-planar environment. Each 2,6-dimethyl-pyridinium-3,5-dicarboxyl-ate anion bridges two Cu atoms, forming a two-dimensional coordination polymer. A three-dimensional supra-molecular network is built from N-H⋯O hydrogen bonds involving the pyridinium NH and the carboxyl COO groups.
authors.forename: Hong-Kun
authors.initials: HK
authors.lastname: Zhang
authors.forename: Yu-Hong
authors.initials: YH
authors.lastname: Du
authors.forename: Tao
authors.initials: T
authors.lastname: Jiang
authors.forename: Bai-Yan
authors.initials: BY
authors.lastname: Li
authors.forename: Guang-Feng
authors.initials: GF
authors.lastname: Hou