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

Abstract

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 CuII 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.