Poly[[μ-1,4-anhydroerythritolato-di-μ-aqua-sodium(I)] monohydrate]

In the title compound, {[Na(C4H7O3)(H2O)2]·H2O}n, the sodium ion is octahedrally coordinated by two bridging 1,4-anhydroerythritolate ligands, unexpectedly coordinated by the ring oxygen and four water ligands. This bonding pattern leads to one-dimensional antitactical polymeric chains along [010]. One of the exocyclic O atoms of the anhydroerythritolate group is an acceptor in four hydrogen bonds, giving further evidence that it is deprotonated