Bis(2,9-dimethyl-1,10-phenanthroline)copper(I) penta­cyanido­nitro­soferrate(II)

The asymmetric unit of the title complex [Cu(C(14)H(12)N(2))(2)](2)[Fe(CN)(5)(NO)], consists of a [Cu(dmp)(2)](+) cation (dmp is 2,9-dimethyl-1,10-phenanthroline) and half an [Fe(CN)(5)(NO)](2−) anion. The anion is disordered across an inversion center with the Fe(II) ion slightly offset (ca 0.205Å) from the inversion center in the direction of the disordered trans-coordinating CN/NO ligands. The anion has a distorted octa­hedral coordination geometry. The Cu(I) ion is coordinated by two phenanthroline ligands in a distorted tetra­hedral geometry. The dihedral angle between the phenanthroline ligands is 77.16 (4) Å. In the crystal, the cations are connected to the anions by weak C—H⋯N hydrogen bonds. In addition, weak π–π stacking inter­actions are observed, with centroid–centroid distances in the range 3.512 (3)–3.859 (3) Å.