EaStCHEM School of Chemistry, University of Edinburgh , The King's Buildings, Edinburgh EH9 3JJ, U. K.
J Am Chem Soc. 2014 Jul 23;136(29):10218-21. doi: 10.1021/ja504835a. Epub 2014 Jul 8.
A new robust and high-yielding synthesis of the valuable U(III) synthon [U(BH4)3(THF)2] is reported. Reactivity in ligand exchange reactions is found to contrast significantly to that of uranium triiodide. This is exemplified by the synthesis and characterization of azamacrocyclic U(III) complexes, including mononuclear [U(BH4)(L)] and dinuclear [Li(THF)4][{U(BH4)}2(μ-BH4)(L(Me))] and [Na(THF)4][{U(BH4)}2(μ-BH4)(L(A))(THF)2]. The structures of all complexes have been determined by single-crystal X-ray diffraction and display two new U(III)2(BH4)3 motifs.
报道了一种新的、高产的有价值的 U(III)前体[U(BH4)3(THF)2]的合成方法。发现其配体交换反应的活性与三碘化铀有很大的不同。这可以通过合成和表征氮杂大环 U(III)配合物来证明，包括单核[U(BH4)(L)]和双核[Li(THF)4][{U(BH4)}2(μ-BH4)(L(Me))]和[Na(THF)4][{U(BH4)}2(μ-BH4)(L(A))(THF)2]。所有配合物的结构均通过单晶 X 射线衍射确定，并显示出两种新的 U(III)2(BH4)3 结构基元。
