title: Bis(4-carb-oxy-pyridine-2-carboxyl-ato-κN,O)copper(II) dimethyl sulfoxide disolvate.
abstract: In the title complex, [Cu(C(7)H(4)NO(4))(2)]·2C(2)H(6)OS, the Cu(II) atom is situated on an inversion centre and is N,O-chelated by two monoanionic 4-carb-oxy-pyridine-2-carboxyl-ate ligands in a slightly distorted square-planar coordination geometry. The dimethyl sulfoxide solvent mol-ecules and Cu(II) complex mol-ecules are linked by O-H⋯O hydrogen bonding. In addition, C-H⋯O contacts and π-π inter-actions [centroid-centroid distance = 3.590 (1) Å] occur.
authors.forename: Hossein
authors.initials: H
authors.lastname: Aghabozorg
authors.forename: Saba
authors.initials: S
authors.lastname: Goodarzi
authors.forename: Masoud
authors.initials: M
authors.lastname: Mirzaei
authors.forename: Behrouz
authors.initials: B
authors.lastname: Notash