COMPLEXATION REACTIONS OF Dy(III), Er(III), Gd(III), Ho(III), AND Sm(III) IONS WITH THENOYLTRIFLUOROACETONE

Abstract

The reactions of thenoyltrifluoroacetone (HTTF) and LnCl₃ (Ln = Dy(III), Er(III), Gd(III), Ho(III) and Sm(III)) in 3:1 ligand:metal molar ratio have been investigated. The isolated solid products have been characterized by spectroscopy (UV-Vis, IR and ¹H NMR), thermogravimetry and elemental analyses. The microanalytical data of the investigated compounds are consistent with the chemical formulas Ln(TTF)₃(H₂O)₂ (Ln = Dy, Gd and Ho), Er(TTF)₃, and Sm(TTF)₂Cl(H₂O). The charge densities on the ligand atoms were calculated by CNDO-SCF calculations. The antibacterial activities of the investigated complexes were tested and evaluated.

ACKNOWLEDGMENT

Thanks for financial support are due to the Research Center, College of Science, King Saud University (Project No. 1419/29 Chem.).