New mononuclear and polynuclear complexes with aminophenol ligands

Some new Cu(II) mononuclear and Cu-La polynuclear complexes with a potentia l bidentate ligand, 2-[(diethylamino) methyl]-6-ethylphenol (AOH) and a pot ential tridentate ligand 2,6- bis[(diethylamino)-methyl]-phenol (A'OH), res pectively, were isolated. The complexes with the following general formulas [Cu(LH)Cl-2] [Cu(LH)(H2O)(2)](NO3)(2), (LH = AOH or A'OH), [Cu(AOH)(AO)Cl] , [Cu(A'O)(2)(H2O)], [CuLaL2(CH3COO)(3)] (L = AO or A'O) were characterized by molar electrical conductivity measurements, electronic, EPR and IR spec tra. The nitrate complexes are paramagnetic having a strong EPR signal in c ontrast with chloride complexes which are diamagnetic having very probably a dimeric structure. The estimation of the electronic densities by MO calcu lations confirms our supposition regarding the bidentate nature of both lig ands in good agreement with the experimental data.