1286281-71-7Relevant academic research and scientific papers
Synthesis of a phosphorano-stabilized U(IV)-carbene via one-electron oxidation of a U(III)-Ylide adduct
Fortier, Skye,Walensky, Justin R.,Wu, Guang,Hayton, Trevor W.
, p. 6894 - 6897 (2011)
Addition of the Wittig reagent Ph3P=CH2 to the U(III) tris(amide) U(NR2)3 (R = SiMe3) generates a mixture of products from which the U(IV) complex U=CHPPh3(NR 2)3 (2) can be obtained. Complex 2 features a short UdC bond and represents a rare example of a uranium carbene. In solution, 2 exists in equilibrium with the U(IV) metallacycle U(CH2SiMe 2NR)(NR2)2 and free Ph3P=CH 2. Measurement of this equilibrium as a function of temperature provides ΔHrxn = 11 kcal/mol and ΔSrxn = 31 eu. Additionally, the electronic structure of the U=C bond was investigated using DFT analysis.
