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Low- and Mid-Valent Uranium Species Supported by Phenyltris(oxazolinyl)borate Ligands
Organometallics ( IF 2.5 ) Pub Date : 2020-01-07 , DOI: 10.1021/acs.organomet.9b00793
Caleb J. Tatebe 1 , Ellen M. Matson 1 , Christopher L. Clark 1 , John J. Kiernicki 1 , Phillip E. Fanwick 1 , Matthias Zeller 1 , Suzanne C. Bart 1
Affiliation  

The synthesis and characterization of a family of uranium derivatives featuring the phenyltris(4,4-dimethyl-2-oxazolinyl)borate (ToM) ligand framework was achieved. Uranium(IV) halide compounds, specifically ToMUCl3(THF) and ToMUI3, were generated by adding 1 equiv of Tl[ToM] to either UCl4 or UI3(THF)4, respectively. The tetravalent derivatives ToMUCl2(NPh2) and ToMUI(═N-Ad)(THF) were also synthesized, showing that ToM supports uranium amido and imido species. Attempts to make bis(phenyltris(oxazolinyl)borate) compounds were unsuccessful. However, when the smaller hydrotris(pyrazolyl)borate (Tp) ligand was used, a mixed bis(ligand) derivative, TpToMUI, was isolated. All of the compounds were characterized by 1H NMR, infrared, and electronic absorption spectroscopies. Where possible, X-ray crystallography was used to assess structural parameters.

中文翻译:

苯基三(恶唑啉基)硼酸盐配体支持的中低价铀物种

实现了具有苯基三(4,4-二甲基-2-恶唑啉基)硼酸酯(To M)配体骨架的铀衍生物家族的合成和表征。铀(IV)卤化物,具体地涉及中号UCL 3(THF)和中号UI 3,通过添加1个当量铊[为了产生中号]要么UCL 4或UI 3(THF)4分别。四价衍生物中号UCL 2(NPH 2)和中号UI(= N-AD)(THF)还合成,显示出为了中号支持铀酰胺和亚胺物种。制备双(苯基三(恶唑啉基)硼酸酯)化合物的尝试未成功。但是,当使用较小的氢三(吡唑基)硼酸酯(Tp)配体时,会分离出混合的双(配体)衍生物TpTo M UI。所有化合物均通过1 H NMR,红外和电子吸收光谱进行表征。在可能的情况下,使用X射线晶体学评估结构参数。
更新日期:2020-01-07
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