catena-Poly[[(dimethyl­formamide-κO)copper(II)]-bis­(μ-4-nitro­phenyl­cyanamido-κ2 N 1:N 3)]

In the title compound, [Cu(C7H4N3O2)2(C3H7NO)], the CuII atom is five-coordinated in a distorted square-pyramidal geometry, with the N atoms in equatorial positions and the dimethyl­formamide O atom in an axial position. The dihedral angle between adjacent benzene rings is 70.33 (12)°

catena-Poly[[(dimethyl­formamide-κO)cobalt(II)]-bis­[μ-(4-nitro­phenyl)­cyanamido]-κ2 N 1:N 3;κ2 N 3:N 1]

In the title coordination polymer, [Co(C7H4N3O2)2(C3H7NO)]n, the CoII atom is five-coordinated in a distorted square-pyramidal CoON4 geometry with the O atom from a dimethyl­formamide mol­ecule in an equatorial position. The bridging phenyl­cyanamide anions generate an infinite chain propagating in [001]