Preparation and characterization of mononuclear nickel(II) and copper(II) complexes of a hexaazamacrobicyclic ligand

✍ Scribed by Abdou Saad El-Tabl

• Publisher: Springer
• Year: 1996
• Tongue: English
• Weight: 364 KB
• Volume: 21
• Category: Article
• ISSN: 0340-4285
• DOI: 10.1007/bf00140785

✦ Synopsis

The structure of the hexaazamacrobicycle, sarcophagine, (diAMMEsar).2H20, formed by extracting Co ion from the [Co(diAMMEsar Hz)]C15HzO cage with 8hydroxyquinoline, has been determined by elemental analysis, and i.r., u.v.-vis., 1H-n.m.r. and mass spectroscopies. Two octahedral complexes, [M(diAMM-EsarH2)JC14.2HzO (M = Ni n or Cull), have been prepared and characterized. The e.s.r, spectrum of the Cu n complex in the solid state indicates spin-exchange interaction between the Cu n ions. However, in CD3OD-DzO (10%) at 77 K, the spectrum is characteristic of a compound having axial symmetry (dx2 y2 ).