trans-Diapuabis(6-Hydroxypicolinato-κN-2,O-2)Copper(II)

Abstract

In the title compound, [Cu(C<inf>6</inf>H<inf>4</inf>NO<inf>3</inf>) <inf>2</inf>(H<inf>2</inf>O)<inf>2</inf>], the CuII ion lies on an inversion centre and has an elongated octahedral environment, equatorially trans-coordinated by two N,Obidentate picolinate ligands and axially coordinated by two water O atoms. The complex molecules form layers, which are linked by O-H⋯O hydrogen bonds between the aqua ligands and neighbouring carboxylate groups. An intramolecular hydrogen bond between the coordinated carboxylate O atom and the hydroxy H atom is also observed. © 2005 International Union of Crystallography.