Preparation, Structure And Properties Of Rare Earth / Transition Metal Organic Complexes

In view of the transition metal-organic coordination compounds, rare earth metal organic coordination compounds, and transition-organ lanthanide coordination compounds with the complicated structure and their sinificance in the fields of optical, magnetic, catalytic, and gas adsorption, their studies of design, synthesis and properties have been becoming hot off press in coordination chemistry. Compare with more research in transition metal organic coordination compounds, the rare earth metals organic coordination compounds still need further research because of their multiple coordination number (8-12) and uncertainty synthesis. This makes the study of the transition-rare metal organic coordination compounds become a challenging task. The intervention of two metal ions in the same crystal structure makes the synthesis of rare earth-transition heteronuclear coordination compounds are more difficult than the general synthesis of the crystal structure contains only a single metal ion. How to choose the appropriate metal organic ions, with suitable organic ligands, the application of crystal engineering of the basic principles of the assembly with the expected structure and function of rare earth-transition metal organic coordination compounds is the direction of this research project.In this thesis, combined with the crystal engineering principles and experiments, we study the synthesis, structures and properties of novel Ln-M coordination compounds. The main work is as follows:In chapter1, review the research background, including transition metal ions, rare earth ions and rare earth-transition mixed metal ion synthesis of coordination compounds with magnetic, optical, electrical and other various functions, and briefly discusses the basis of the topics of this paper.In chapter2, we chose formic acid (FA),1,4-dicarboxylic acid naphthalene (1,4-napdch2) and Pyridiane-2,5-dicarboxylic acid (H2pydc) as ligands to synthesize five novel transition metal coordination compounds, four of which the crystal structure are3D. We also synthesized one3D rare-earth single metal coodination compound. In chapter3, there were9Ln-M heteronuclear coordination compounds containing cyano (CN-) transition metal salts, were synthesized using the evaporation method and the gel method. In which two of these coordination compounds using solvent DMF ligands are heterogeneous isomorphous. Six of these coordination compounds with liigand phenanthroline (Phen) ligand are heterogeneous isomorphous. And their magnetic properties are discussed, showing the antiferromagnetic.In chapter4, we use the six cyanide of potassium chromate K.3[Cr (CN)6] and Nd(NO3)3to synthesize a three-dimensional coordination compound; we also selected a multiple coordination points ligands-cyanuric acid (CA) to synthesize a heteronuclear metal coordination compound.