title: Bis(4-amino-pyridinium) bis-(oxalato-κO,O')cuprate(II) dihydrate.
abstract: The Cu(II) atom in the title salt, (C(5)H(7)N(2))(2)[Cu(C(2)O(4))(2)]·2H(2)O, is located on a center of inversion and is chelated by two oxalate groups in a square-planar coordination geometry. The cation, anion and water mol-ecules inter-act through hydrogen bonds, forming a three-dimensional hydrogen-bonded network.
authors.forename: Zi-Cai
authors.initials: ZC
authors.lastname: Pan
authors.forename: Kou-Lin
authors.initials: KL
authors.lastname: Zhang
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng