Lanthanide(III) Derivatives of β-Amidoamines

Abstract

The reactions of β-amidoamines N-N′-ethylene bis(acetoacetanilideimine) and N-N′-propylene bis(aceto-acetanilideimine) in different stoichiometric ratios (1:1, 1:2 and 2:3) yielded different substituted products of the type Ln(OPrⁱ) (AA), Ln(AA)(AAH) and Ln₂(AA)₃ (where AA₋₂ is the anion of the corresponding bifunctional quadridentate β-amdoamine). These reactions liberated two, three and six moles of isopropyl alcohol. All these complexes were light yellow to brown solids and were insoluble in benzene and common organic solvents, however, all appeared to be soluble in DMSO and DMF. Their structures have been inferred on the basis of elemental analyses, molecular weight determination and ir spectral data.