Crystal and molecular structure of [N,N-bis(2-carbamoylethyl)aminoacetato](imidazole)copper(II) perchlorate monohydrate, [Cu(Bcegly)(Im)](ClO4) · H2O

The [Cu(Bcegly)(Im)](ClO4) · H2O aminocarboxylate, where HBcegly is N,N-bis(2-carbamoyl-ethyl)aminoacetic acid and Im is imidazole, is studied by X-ray diffraction. The polyhedron of the Cu atom is an asymmetrically elongated tetragonal bipyramid (4 + 1 + 1), whose equatorial plane is composed of two oxygen atoms (average Cu-O, 1.952 Å) and a nitrogen atom (Cu-N, 2.031 Å) of the Bcegly− ligand and the nitrogen atom of the Im ligand (Cu-N, 1.970 Å) and the axial positions are occupied by oxygen atoms of the Bceglyligand (Cu-O, 2.357 Å) and the perchlorate ion (Cu-O, 2.830 Å). The Bcegly− ligand fulfils the tetradentate chelate function closing three metallocycles, namely, two six-membered CuNC3O cycles and one five-membered CuNC2O cycle. Complex cations, ClO4− anions, and crystallization water molecules are connected by an extended system of hydrogen bonds.