Chemistry of lanthanons-XVIII: mixed chelates of La, Pr, Nd, Sm and Y containing β-diketone and bis-salicylaldehyde ethylenediamine

Abstract

Mixed ligand complexes of lanthanides (La, Pr, Nd, Sm) and Y containing botg β-diketone and bis-salicylaldehyde ethylenediamine (H₂ Salen) as the associated ligand molecules have been prepared. By reacting tris-acetyl acetonate and tris-propionyl acetonates of the above lanthanides with the Schiff's base in ammoniacal atmosphere compounds obtained were of the type [Ln(diket)₂(Salen)_0.5] (I), whereas by refluxing the tris-benzoyl acetonates and tris-dibenzoyl methanides with the Schiff's base, a second series of compound viz., [Ln(diket)(Salen)] (II) were obtained. Sodium salts of tetrakisbenzoyl acetonates and dibenzoyl methanides also yield compounds of the second type.