New Chemistry from an Old Reagent: Mono- and Dinuclear Macrocyclic Uranium(III) Complexes from [U(BH4)3(THF)2]

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• 作者：Polly L. Arnold ; Charlotte J. Stevens ; Joy H. Farnaby ; Michael G. Gardiner ; Gary S. Nichol ; Jason B. Love
• 刊名：Journal of the American Chemical Society
• 出版年：2014
• 出版时间：July 23, 2014
• 年：2014
• 卷：136
• 期：29
• 页码：10218-10221
• 全文大小：263K
• ISSN：1520-5126

文摘

A new robust and high-yielding synthesis of the valuable U^III synthon [U(BHb>4b>)b>3b>(THF)b>2b>] 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(BHb>4b>)(L)] and dinuclear [Li(THF)b>4b>][{U(BHb>4b>)}b>2b>(渭-BHb>4b>)(L^Me)] and [Na(THF)b>4b>][{U(BHb>4b>)}b>2b>(渭-BHb>4b>)(L^A)(THF)b>2b>]. The structures of all complexes have been determined by single-crystal X-ray diffraction and display two new U^IIIb>2b>(BHb>4b>)b>3b> motifs.