Synthesis and structural characterization of single and mixed ligand complexes some lantanid group metal cations

The synthesis of the coordination compounds of the cations of the Lanthanide and Actinide moieties and the study of the structural properties of these compounds are very recent. The interest in the studies on the complex structures of the metal cations of the lanthanide side group with organic ligands has increased in recent years. The coordination compounds of the lanthanide cations were discovered too late compared to the coordination compounds of transition metal cations. However, in terms of physical and chemical properties of lanthanide complexes, their differences according to transition metals increase their importance. The high coordination number of these metal cations due to the oxidation step +3 and the radiuses of these metal cations allows the coordination of many organic ligands around the metal cation. Pure metal-organic ligand complexes with anionic or neutral organic ligands have important properties in many aspects. Within the scope of this thesis, the synthesis of mixed ligand coordinate compounds containing the ligands of Acesulfame K-Nicotinamide / N, N-diethylnicotinamide of the rare earth elements of Evropiyum (III), Terbiyum (III), Holmiyum (III), Erbiyum (III) and İtterbiyum (III) structures; Elemental analysis, fourier transformed infrared spectroscopy (FTIR), thermogravimetric analysis (TGA / DTA), solid ultroviyole-visible region spectroscopy (UV-VIS), mass spectroscopy (GC-MS) and melting point determination methods were tried to be elucidated. The molecular formulas of the complexes synthesized according to these results are proposed as follows: (I) [Eu(C4H4NO4S)2(H2O)2](C4H4NO4S).H2O (II) [Tb(C4H4NO4S)2(H2O)2](C4H4NO4S).H2O (III) [Ho(C4H4NO4S)2(H2O)2](C4H4NO4S).H2O (IV) [Er(C4H4NO4S)2(H2O)2](C4H4NO4S).H2O (V) [Yb(C4H4NO4S)2(H2O)2](C4H4NO4S).H2O (VI) [Eu(C4H4NO4S)2(C6H6N2O)2(H2O)2](C4H4NO4S).H2O (VII) [Tb(C4H4NO4S)2(C6H6N2O)2(H2O)2](C4H4NO4S).H2O (VIII) [Ho(C4H4NO4S)2(C6H6N2O)2(H2O)2](C4H4NO4S).H2O (IX) [Er(C4H4NO4S)2(C6H6N2O)2(H2O)2](C4H4NO4S) (X) [Yb(C4H4NO4S)2(C6H6N2O)2(H2O)2](C4H4NO4S).H2O (XI) [Eu(C4H4NO4S)2(C10H14N2O)2(H2O)2](C4H4NO4S).H2O (XII) [Tb(C4H4NO4S)2(C10H14N2O)2(H2O)2](C4H4NO4S).H2O (XIII) [Ho(C4H4NO4S)2(C10H14N2O)2(H2O)2](C4H4NO4S) (XIV) [Er(C4H4NO4S)2(C10H14N2O)2(H2O)2](C4H4NO4S) (XV) Yb(C4H4NO4S)2(C10H14N2O)2(H2O)2](C4H4NO4S).H2O