Synthesis And Properties Of Transition Metal Phosphonates Based On Phosphorus Ligands

In recent years, the research on functional complexes with optical, electronic, and maganetic properties has developed rapidly. Because it concerns not only coordination chemistry and material chemistry, but also biology and physics. Undoubtedly, the research on functional complexes has been one of the hot topics. In all such complexes, the metal phosphonate with special optical and magnetic properties has attracted great interest in the last decade. Such complexes present novel structures as well as special properties, and have potential great application as optical and magnetic materials.Focused on this hot topic, some phosphorus ligands have been used to design and synthesize twenty-two new complexes in this thesis. Among these complexes, the first metal phosphate with large hydrophilic and hydrophobic pores was synthesized under hydrothermal condition. Based on phosphite ligand, the complex with large channels was designed and synthesized. Further, the effect of amino acids in the formation of three-dimension structures of phosphonates has been investigated. Using amino phosphorus ligands, a series of bilayer complexes based on polynuclear cluster have been synthesized under hydrothermal and diffuse conditions. To the best our knowledge, it is the first time to find three zinc coordination numbers (4-, 5-, 6-) in one Zn(II) complex. The alkaline earth cations exchange reactions are also discussed. By introducing additional chiral site, the transformation from nonchiral to chiral luminescent materials has been achieved. The first 3D heterometal phosphonate based on polynuclear cluster with left-handed and right-handed channels has been synthesized, and the gas adsorption ability and the thermal stabilization are also investigated. Using benzyl phosphorus and pyridine phosphorus ligands, a series of complexes were synthesized and their structures were also discussed.