Solid‐State Reactions of Lanthanide(III) with Sodium Salicylate and 8‐Hydroxyquinoline at Room Temperature

Abstract

At room temperature, four complexes Ln(Hsal)₂(hq) (Ln = La(III), Ce(III), Pr(III), Y(III), Hsal⁻ = C₆H₄(OH)COO⁻, salicylate anion; hq⁻ = C₉H₆NO⁻, 8‐hydroxyquinoline anion) were successfully synthesized by a solid‐state reaction. These complexes were further characterized by elemental analyses, electrical conductance in non‐aqueous solvents, x‐ray powder diffraction, IR and TG–DTA. IR spectra showed that the rare earth ions are not only coordinated by the oxygen atom from the COO group, but also by the nitrogen atom and oxygen atom of 8‐hydroxyquinoline. TG–DTA showed that the stability of the four complexes is better than that of sodium salicylate and 8‐hydroxyquinoline. These results show good agreement with results of the literature. The unit cells of the complexes at room temperature have been determined by x‐ray powder diffraction (XRD). The crystals of all four complexes belong to the triclinic system and P ₁ space group. Unit cell parameters were found by using trial and error methods.

Keywords:

• Solid state reactions
• Room temperature
• Lanthanide(III)
• Sodium salicylate
• Antibacterial

Acknowledgments

This work was financially supported by the Research Fund of Education Committee and Technologies R&D Program of Shanghai City. We are also grateful to Professor Zhu Y. L. of the Department of Chemistry, Fudan University, Professor Wang Z. M. and Dr. Yang Shiping of the Department of Chemistry, Shanghai Normal University, for their valuable suggestions and discussions during the course of this work.