catena-Poly[[diaqua(3-cyanobenzoato-O,O′)-erbium]-bis-μ-(3- cyanobenzoato-O:O′)]

Article abstract of DOI:10.1107/S0108270199007696

The title compound, [Er(C₈H₄NO₂)₃(H₂O) ₂]_n, has a one-dimensional chain structure bridged by carboxylate groups. The Er^III atom and one 3-cyanobenzoate ligand lie on a twofold axis and this ligand has its cyano group disordered over two sites. Each Er^III atom is surrounded by two O atoms from one chelating carboxylate group, four O atoms from four different bridging carboxylate groups and two water molecules, leading to a square-antiprism coordination polyhedron.