Trans-Diaqua­bis(3-Hydroxy­Benzoato-κO)Bis­(Nicotinamide-κN)Copper(II)

Abstract

The title compound, [Cu(C7H5O3)2(C6H6N2O)2(H2O)2], is a two-dimensional hydrogen-bonded supra-molecular complex. The CuII ion resides on a centre of symmetry and is in an octa-hedral coordination environment comprising two pyridine N atoms, two carboxyl-ate O atoms and two O atoms from water mol-ecules. Inter-molecular N - H⋯O and O - H⋯O hydrogen bonds produce R 2 2(4), R 2 2(8) and R 2 2(15) rings which lead to one-dimensional polymeric chains. An extensive two-dimensional network of N - H⋯O and O - H⋯O hydrogen bonds and C - H⋯π inter-actions are responsible for crystal stabilization. © International Union of Crystallography 2007.