Structure of aqua[N,N'-ethylenebis(N-carbamoylmethylglycinato)]copper(II) dihydrate.

The structure consists of a copper(II) cation octahedrally coordinated to the polyaminocarboxylate ligand through five ligating atoms: one N atom of the ethylenediamine ring, two carboxylate O atoms and a molecule of water form a square plane, while one amide O and the other ethylenediamine-ring N atom are above and below the plane. The latter two atoms display tetragonal distortion. Eight intermolecular hydrogen bonds involve H, N and O atoms of the complex as well as the two water molecules of crystallization.