Poly[[μ4-tartrato-cadmium(II)] 0.167-hydrate]

Abstract

The title compound, {[Cd(C4H4O6)]·0.167H2O}n, adopts a three-dimensional network structure in which each CdII ion is chelated by two pairs of carboxylate and hydroxyl O atoms from two tartrate anions, and is additionally linked to two O atoms of two carboxylate groups that are not involved in chelation. The asymmetric unit has four independent cadmium atoms, two of which lie on special positions of 2 site symmetry. The tartrate anions all lie on general positions. All hydroxyl groups are engaged in O—H...O hydrogen-bonds, one of which is also bifurcated. The non-coordinating water molecule is situated on a site with half-occupation.