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, (C₈H₁₈N₃O₂)₂[Cu₂(C₈H₁₅N₃O₂)₂(C₈H₁₇N₃O₂)₂](C₉H₁₆N₃O₄)₂·2CH₃CN, in which an inversion center is located at the midpoint of the Cu₂ unit in the center of the neutral [Cu₂(C₈H₁₅N₃O₂)₂(C₈H₁₇N₃O₂)₂] complex fragment. The Cu²⁺ 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 N₄O 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 [Cu₂(C₈H₁₅N₃O₂)₂(C₈H₁₇N₃O₂)₂] and the ion pair C₈H₁₈N₃O₂^+.C₉H₁₆N₃O₄⁻ are connected via an extended system of hydrogen bonds.

Tetra­butyl­ammonium 2-[2,5-dimethyl-3-(4-nitro­phen­yl)-2,3-dihydro-1,2,4-oxadiazo­lium-4-yl]nona­hydro-closo-deca­borate

The title ionic compound, C₁₆H₃₆N⁺·C₁₀H₂₀B₁₀N₃O₃^-, consists of a tetra­butyl­ammonium cation and a closo-deca­borate cluster anion, which is bound to the substituted 2,3-dihydro-1,2,4-oxadiazole ring through a B-N bond [1.540 (2) Å]. The distances between connected B atoms in the deca­borate cluster range from 1.689 (2) to 1.844 (2) Å. The 2,3-dihydro-1,2,4-oxadiazole ring adopts an envelope conformation with the N atom as the flap atom.