Synthesis of Coordinatively Unsaturated Tetravalent Actinide Complexes with η<sup>5</sup> Coordination of Pyrrole
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The synthesis of new actinide complexes utilizing bridged α-alkyl-pyrrolyl ligands is presented. Lithiation of the ligands followed by treatment with 1 equiv of actinide tetrachloride (uranium or thorium) produces the desired complex in good yield. X-ray diffraction studies reveal unique η5:η5 coordination of the pyrrolyl moieties; when the nonsterically demanding methylated ligand is used, rapid addition of the lithiated ligand solution to the metal precursor forms a bis-ligated complex that reveals η5:η1 coordination as determined by crystallographic analysis.
创建时间：
2016-03-15
