Magnetic Properties and Coordination Polymerization of Lanthanide Phosphate Complexes




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The intrinsic properties of lanthanides give steric and electronic advantages in rare earth organometallics. Lanthanides have the potential to accomplish unique applications which cannot be done using transition metals. The first chapter describes the structure of the lanthanide complexes and the potential applications of the f block chemistry because of their magnetic and catalytic properties. The second chapter highlights a discrete neodymium complex for the polymerization of dienes and polar vinyl monomers. The study of the kinetics of polymerization shows a quasi-living polymerization which is beneficial to control the molecular weight and synthesize new materials using block copolymers. The third chapter focuses on the application of polynuclear lanthanide organophosphate complexes as molecular magnets. Lanthanide organophosphate complexes based on a triethyl phosphate ligand have been prepared using azeotropic distillation to explore their structure and properties. Single crystal X-ray diffraction studies show isomorphic complexes having a unique one-dimensional polymer with the bridging ligand connecting the LnIII ions. A series of the three lanthanide coordination polymers display the phosphate groups as an irregular distorted tetrahedron. These complexes were synthesized in search of new single-molecule magnets. SQUID magnetometry studies show high magnetic susceptibility.



Chemistry, Polymer, Chemistry, Inorganic