Bis­{(E)-3-[2-(hy­droxy­imino)­propan­amido]-2,2-dimethyl­propan-1-aminium} bis[μ-(E)-N-(3-amino-2,2-dimethyl­prop­yl)-2-(hy­droxy­imino)­propanamido­(2−)]bis­{[(E)-N-(3-amino-2,2-dimethyl­prop­yl)-2-(hy­droxy­imino)­propanamide]­copper(II)} bis­((E)-{3-[2-(hy­droxy­imino)­propanamido]-2,2-dimethyl­prop­yl}carbamate) acetonitrile disolvate

The reaction between copper(II) nitrate and (E)-N-(3-amino-2,2-dimethyl­prop­yl)-2-(hy­droxy­imino)­propanamide led to the formation of the dinuclear centrosymmetric copper(II) title complex, (C(8)H(18)N(3)O(2))(2)[Cu(2)(C(8)H(15)N(3)O(2))(2)(C(8)H(17)N(3)O(2))(2)](C(9)H(16)N(3)O(4))(2)·2CH(3)CN, in which an inversion center is located at the midpoint of the Cu(2) unit in the center of the neutral [Cu(2)(C(8)H(15)N(3)O(2))(2)(C(8)H(17)N(3)O(2))(2)] complex fragment. The Cu(2+) ions are connected by two N—O bridging groups [Cu⋯Cu separation = 4.0608 (5) Å] while the Cu(II) ions are five-coordinated in a square-pyramidal N(4)O coordination environment. The complex mol­ecule co-crystallizes with two mol­ecules of acetonitrile, two mol­ecules of the protonated ligand (E)-3-[2-(hy­droxy­imino)­propanamido]-2,2-dimethyl­propan-1-aminium and two negatively charged (E)-{3-[2-(hy­droxy­imino)­propanamido]-2,2-dimethyl­prop­yl}carbamate anions, which were probably formed as a result of condensation between (E)-N-(3-amino-2,2-dimethyl­prop­yl)-2-(hy­droxy­imino)­propanamide and hydro­gencarbonate anions. In the crystal, the complex fragment [Cu(2)(C(8)H(15)N(3)O(2))(2)(C(8)H(17)N(3)O(2))(2)] and the ion pair C(8)H(18)N(3)O(2) (+.)C(9)H(16)N(3)O(4) (−) are connected via an extended system of hydrogen bonds.