Synthesis and structural characterization of lanthanide picrate complexes with a new binaphthylamide

Solid complexes of lanthanide picrates with N-Ethyl-2-{2'-[(ethyl-phenyl-carbamoyl)-methoxy]-[1,1']binaphthalenyl-2-yloxy }-N-phenyl-acetamide (L), [Ln(pic)(3)L] (Ln = La, Th, Y), have been prepared and characterized by elemental analysis, IR and H-1 NMR spectra. The molecular structure of [Tb(pic)(3)L] shows that the Tb(III) ion is nine-coordinated by four oxygen atoms from the L and five from two bidentate and one unidentate picrates. The complex forms a 1D supramolecular structure along z-axis. (C) 2003 Published by Elsevier B.V.