Use of Alkylsodium Reagents
for the Synthesis of Trivalent
Uranium Alkyl Complexes
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Abstract
A family of rare uranium(III) alkyl complexes, Tp*<sub>2</sub>UR
(R = CH<sub>2</sub>SiMe<sub>3</sub> (<b>3-CH</b><sub><b>2</b></sub><b>SiMe</b><sub><b>3</b></sub>), CH<sub>3</sub> (<b>4-CH</b><sub><b>3</b></sub>), (CH<sub>2</sub>)<sub>3</sub>CH<sub>3</sub> (<b>5-(CH</b><sub><b>2</b></sub><b>)</b><sub><b>3</b></sub><b>CH</b><sub><b>3</b></sub>); Tp* = hydrotris(3,5-dimethylpyrazolyl)borate), was
synthesized by salt metathesis with alkylsodium reagents and Tp*<sub>2</sub>UI (<b>2</b>). All compounds were fully characterized
using <sup>1</sup>H NMR, infrared, and electronic absorption spectroscopies.
Compounds <b>3-CH</b><sub><b>2</b></sub><b>SiMe</b><sub><b>3</b></sub> and <b>4-CH</b><sub><b>3</b></sub> were structurally characterized using X-ray crystallography
and have U–C bond distances of 2.601(9) and 2.54(3) Å,
respectively
