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Article Dans Une Revue Journal of the Chemical Society, Dalton Transactions Année : 1996

Monocyclooctatetraene uranium amide compounds in the+ 4 and+ 5 oxidation states

Résumé

The compounds M[U(cot)(NE$t_2$$)_3$] 1 (cot =$\eta$-$C_{8}$$H_{8}$, M = Li or K) were prepared by (a) reaction of [U(NE$t_2$$)_4$] or [U(NE$t_2$$)_3$][B$Ph_{4}$] with $K_{2}$ (cot), (b) treatment of U$Cl_{4}$ with LiNE$t_2$. and $K_{2}$ (cot) and (c) reaction of [U(cot$)_{2}$] with LiNE$t_2$. The compound [U(cot)( NE$t_2$$)_2$(thf)] 2 (thf = tetrahydrofuran) was synthesized by treating [U(NE$t_2$$)_2$$Cl_{2}$] with K2(cot). Uranium(V) compounds were obtained by oxidation of 1 and 2. Treatment of 1 with Tl B$Ph_{4}$ afforded [U(cot)( NE$t_2$$)_3$] which was tranformed into [U(cot)(OPri)3] by alcoholysis. Complex 2 reacted with AgB$Ph_{4}$ or Tl(cp)(cp=$\eta$-$C_{5}$$H_{5}$) to give [U(cot)( NE$t_2$$)_2$ (thf)][B$Ph_{4}$] and [U(cot)(cp)( NE$t_2$$)_2$] respectively, the crystal structure of the first of which has been determined.

Domaines

Chimie

Dates et versions

hal-01874424 , version 1 (14-09-2018)

Identifiants

Citer

Christophe Boisson, Jean-Claude Berthet, Monique Lance, Julien Vigner, Martine Nierlich, et al.. Monocyclooctatetraene uranium amide compounds in the+ 4 and+ 5 oxidation states. Journal of the Chemical Society, Dalton Transactions, 1996, 6, pp.947--953. ⟨10.1039/DT9960000947⟩. ⟨hal-01874424⟩

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