Poly[diaqua(μ3-pyridine-3,5-dicarboxylato-κ3N:O3:O5)copper(II)]

Abstract

The title complex, [Cu(C7H3NO4)(H2O)2]n, was prepared under hydrothermal reaction conditions. In the crystal structure, the CuII cation is located on a twofold rotation axis and is coordinated by two carboxylate O atoms and one N atom from three pyridine-3,5-dicarboxylate (PDA) anions and two water molecules with a distorted trigonal–bipyramidal geometry. The tridentate PDA anion is also located on the twofold rotation axis and bridges the CuII cations to form a two-dimensional polymeric layer. O—H...O hydrogen bonding between layers links the two-dimensional layers into a three-dimensional supramolecular framework.