الخلاصة:
This work is concerned with the synthesis, structural determination X-rays diffraction and study of the physico-chimicals and photophysicals properties and thermal stability, as well as, graph set, Hirshfeld surface analysis and the topology of all mono and binuclear lanthanides complexes synthesis in this work. In the first part, the synthesis and the characterization of two new mononuclear lanthanides and fumaric acid complexes was investigated. The synthesis and study of the structural, spectroscopic and photophysical
properties of two series of binuclear compounds resulting from the lanthanides and L-tartaric acid is the topic of the second part of this work. In the last part, we describe the preparation of nine isostructural binuclear 4f complexes, where the assembling ligand is 1, 4-phenylenediacetate. The characterization by spectroscopic and photophysical methods was make for the nine complexes.