Lewis Base Activation by Uranium(III) Complexes

被引：2

作者：

Lin, Nathan J. ^{[1
]}

Perales, Diana ^{[1
]}

Matson, Ellen M. ^{[1
]}

Zeller, Matthias ^{[1
]}

Bart, Suzanne C. ^{[1
]}

机构：

[1] Purdue Univ, Dept Chem, HC Brown Lab, W Lafayette, IN 47907 USA

来源：

ORGANOMETALLICS | 2023年 / 42卷 / 08期

基金：

美国国家科学基金会;

关键词：

CRYSTAL-STRUCTURES; PYRIDINE; CHEMISTRY; LIGAND; REACTIVITY; POTASSIUM;

D O I：

10.1021/acs.organomet.2c00633

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The combination of a bulky hypersilyl potassium [(Me3Si)(3)SiK] reagent with Tp*2UI (Tp* = hydrotris(3,5-dimethylpyrazolyl)borate) in the presence of ethereal Lewis donors resulted in the formation of base-activated DME). The reactivity with another Lewis base, pyridine, was explored by treating Tp*2UI and hypersilyl potassium or benzyl potassium in the presence of pyridine, which resulted in formation of Tp*2U[NC5H5-4-Si(SiMe3)3] (3-py-Si) and Tp*U-2(NC5H5-4-Bn) (4-py-Bn, Bn = benzyl), respectively. Multinuclear paramagnetic NMR spectroscopy (H-1, B-11{1H}, Si-29{H-1}) supported the formation of the Lewis base activated uranium compounds as corroborated by electronic absorption spectroscopy and X-ray crystallography. To recognize the mechanistic possibilities, radical trap experiments were performed and [K(18-crown-6)][4-benzylpyridinide] (4-K), Tp*U(IV)[(equivalent to NC(Me)C(H)C(Me)N)-B(H)(3,5-dimethylpyrazole)2] (6-Tp*UTp '), and [Tp*U-2(NC5H5)](2) (5-py-py) were observed.

引用

页码：641 / 650

页数：10

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