mu-Cyanido-kappa C-2:N-dicyanido-kappa C-2-bis(N-ethylethylenediamine-kappa N-2,N')copper(II)-copper(I)

In the title complex, [(CuCuII)-Cu-I(CN)(3)(C4H12N2)(2)],the Cu-I and Cu-II ions and a bridging cyanide group lie on a twofold rotation axis. The Cu-II ion is in a slightly-distorted square-pyramidal coordination environment, with the N atoms of the two symmetry-related N-ethylethylenediamine ligands occupying the basal positions and an N-bonded cyanide group in the apical position. The Cu-I ion is in a trigonal-planar coordination environment, bonded to the C atom of the bridging cyanide group and to two terminal cyanide groups. In the crystal, N-H center dot center dot center dot N hydrogen bonds involving two of the symmetry-unique N-H groups of the N-ethylethylenediamine ligands and the N atoms of the terminal cyanide ligands link the molecules into strands along [010].