Preparation of U(IV) κ1-amidinate complexes by nitrile metathesis

Tatebe, Caleb J.; Collins, Tyler S.; Barnett, Grant Reed; Zeller, Mat­thias; Bart, Suzanne C.

doi:10.1016/j.poly.2018.10.042

Cited by 5 publications

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“…Coupled with our previous experiences with hydrotris(3,5-dimethylpyrazolyl)borate (Tp*) − and hydrotris(3-phenylpyrazolyl)borate (Tp Ph ) ligands on uranium, we hypothesized that the chemistry of the phenyltris(4,4-dimethyl-2-oxazolinyl)borate (To M ) ligand framework would follow suit and may allow access to chiral variants of low-valent organoactinide complexes. Herein we report our entry into the synthesis and characterization of uranium(III) and uranium(IV) derivatives of the To M ligand, including their reactivity.…”

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confidence: 99%

Low- and Mid-Valent Uranium Species Supported by Phenyltris(oxazolinyl)borate Ligands

et al. 2020

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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.

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