NEW ACYCLIC AND CYCLIC SCHIFF-BASES DERIVED FROM 2,6-DIFORMYL-4-CHLOROPHENOL AND THEIR INTERACTION WITH URANYL(VI), COPPER(II) AND NICKEL(II) IONS

New acyclic and cyclic Schiff base compartmental ligands have been prepared, by reaction of 4-chloro- 2,6-diformylphenol and polyamines of the type NH2(CH2)2X(CH2)2NH2 (X = NH, S). These ligands have two similar or dissimilar compartments in dose proximity and can link two metal ions in an identical or different coordination mode. The preparation of mono and binuclear uranyl(VI), nickel(II) and copper(II) complexes is also reported together with their physicochemical properties. For the mononuclear species, with ligands having dissimilar compartments, the site occupancy is also discussed on the basis of IR, UV and magnetic properties. For the homobinuclear copper(II) and nickel(II) complexes an antiferromagnetic interaction between the two paramagnetic centres is suggested. © 1985.