Synthesis
of Uranium–Ligand Multiple Bonds
by Cleavage of a Trityl Protecting Group
- Publication date
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Abstract
Addition of KSCPh<sub>3</sub> to
[U(NR<sub>2</sub>)<sub>3</sub>] (R = SiMe<sub>3</sub>) in tetrahydrofuran,
followed by addition
of 18-crown-6, results in formation of the U(IV) sulfide, [K(18-crown-6)][U(S)(NR<sub>2</sub>)<sub>3</sub>] (<b>1</b>) and Gomberg’s dimer.
Similarly, addition of KOCPh<sub>3</sub> to [U(NR<sub>2</sub>)<sub>3</sub>] in tetrahydrofuran, followed by addition of 18-crown-6,
results in formation of the U(IV) oxide, [K(18-crown-6)][U(O)(NR<sub>2</sub>)<sub>3</sub>] (<b>3</b>). Also observed in this transformation
are the triphenylmethyl anion, [K(18-crown-6)(THF)<sub>2</sub>][CPh<sub>3</sub>] (<b>5</b>), and the U(IV) alkoxide, [U(OCPh<sub>3</sub>)(NR<sub>2</sub>)<sub>3</sub>] (<b>4</b>)
