Bis[1,3-bis-(benzimidazol-2-yl)-2-oxapropane]copper(II)-picrate-dimethyl-formamide (1/2/4)

In the title compound, [Cu(C(16)H(14)N(4)O)(2)](C(6)H(2)N(3)O(7))(2)·4C(3)H(7)NO, the Cu(II) ion is located on a crystallographic inversion center and is coordinated in a distorted octa-hedral environment by four N atoms and two O atoms forming two long Cu-O bonds. One of the unique dimethyl-formamide solvent mol-ecules is disordered over two sites with occupancies of 0.715 (6) and 0.285 (6). The crystal structure is stabilized by inter-molecular N-H⋯O hydrogen bonds.