Poly[[hexa­aqua­bis(μ3-pyridine-2,5-dicarboxyl­ato-κ4 O: O′, N: O′′)bis­(μ2-pyridine-2,5-dicarboxyl­ato-κ3 O: O′, N)dieuropium(III)copper(II)] dihydrate]

The title polymeric compound, {[Eu2Cu(C7H3O4)4(H2O)6]·2H2O} n, was prepared by a hydro­thermal reaction at 453 K. The EuIII ion has a double-capped trigonal prismatic coordination geometry with an NdNO7 core, while the CuII ion is located on an inversion center and assumes a square-planar coordination geometry. The pyridine-2,5-dicarboxyl­ate dianions bridge the EuIII and CuII ions, forming a three-dimensional polymeric structure. [ABSTRACT FROM AUTHOR]