Crystal and Molecular Structure of a Cu(II) Complex with Macrocyclic Ligand of 10,12-dibromo-6-ethylcyanide-3,6,14,18-tetraazapentaicosa-1(25), 8(24),10,12,13,19,21,23-octaene-24,25-diol

Abstract

The crystal structure of the title compound was determined by single-crystal X-ray diffraction. The compound crystallizes in a monoclinic system and was characterized thus: P2₁/n, a = 8.6189(2)Å, b = 17.9591(7)Å, c = 18.4009(6)Å, β = 102.2560(19)°, Z = 4, V = 2783.32(16)ų. In the mono nuclear macrocyclic complex the copper(II) ion resides at the N(imine)₂O₂ coordination site, whereas the other compartment, N(amine)₂O₂, is occupied by a proton. The geometry around copper(II) is square-planar.