Synthesis and characterization of cerium (III) and (IV) compounds

Abstract

Treatment of Cp*2CeCl2K with various aryl alcohols and amines produces Cp*2Ce(O- 2,6-iPr2C6H3) and Cp*2Ce(N(C6H5)2). The crystallographic structures are presented as well as their fluorescence. Absorbance measurements provide unique absorbance max- ima for each compound, however their fluorescence is exactly the same signifying that their molecular orbitals have similar energies. Treatment of Cp*2Ce(O-2,6-iPr2C6H3) with copper halide salts results in the formation of various Ce(IV)-halide compounds. Finally, in order to examine alternate ligand frameworks, other than Cp*, treatment of Ce(N(SiMe3)2)3 with H(esac) and H(Mes-Ph6) resulted in unique cerium (III) com- plexes that contained β diketones. Within these complexes, their synthetic method and characterization are presented.