μ-Cyanido-κ(2) C:N-dicyanido-κ(2) C-bis­(N-ethyl­ethylenedi­amine-κ(2) N,N′)copper(II)copper(I)

In the title complex, [Cu(I)Cu(II)(CN)(3)(C(4)H(12)N(2))(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⋯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].