名称:
Synthesis, characterization of 2-(bis-dibutylcarbamoylmethyl-amino)-N, N-dibutyl-acetamide (L) lanthanide picrate complexes (Ln=Nd, Eu, Tb) and the crystal structure of [Tb(pic)3L]
摘要:
Solid complexes of lanthanide picrate with the ligand 2-(bis-dibutylcarbamoylmethyl-amino)-N, N-dibutyl-acetamide (L), [Ln(PiC)(3)L] (Ln = Nd, Eu, Th), have been prepared and characterized by elemental analysis, conductivity measurements, DTA and TGA analysis, IR and H-1 NMR spectra. For the terbium complex, X-ray measurements show that Tb(III) ion is 9-coordinated by three oxygen atoms and one nitrogen atom of L and five oxygen atoms of picrate groups. Molecule B has a clockwise structure due to the screw coordination arrangement of the tripod-type ligand. (C) 2003 Elsevier B.V. All rights reserved.