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Uranium amides as precursors to cationic and/or pentavalent compounds

机译:铀酰胺作为阳离子和/或五价化合物的前体

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The uranium chloroamide complexes [U(NEt2)(n)Cl4-n] (n=1, 2) were isolated from the comproportionation reactions of [U(NEt2)(4)] and UCl4. The protonolysis reaction of the M-NR, bond (M=Ti, Zr, Hf, U; R=Me, Et, SiMe3) with the ammonium salt NHR3'BPh4, (R'=Et, Me) constitutes an efficient and practical route to cationic complexes. Thus were prepared a series of organometallic uranium cations in the +3, +4 and +5 oxidation states. The reactions of these cationic compounds with nucleophiles, proton acidic substrates and unsaturated molecules have been developed. The dialkylamide ligand was useful to stabilize unique examples of neutral and cationic complexes of uranium in the +5 oxidation state. (C) 1998 Elsevier Science S.A. [References: 34]
机译:从[U(NEt2)(4)]和UCl4的歧化反应中分离出铀氯酰胺配合物[U(NEt2)(n)Cl4-n](n = 1,2)。 M-NR键(M = Ti,Zr,Hf,U; R = Me,Et,SiMe3)与铵盐NHR3'BPh4(R'= Et,Me)的质子分解反应构成了一种有效而实用的阳离子络合物的途径。因此制备了一系列处于+ 3,+ 4和+5氧化态的有机金属铀阳离子。已经开发了这些阳离子化合物与亲核试剂,质子酸性底物和不饱和分子的反应。二烷基酰胺配体可用于稳定+5氧化态的铀中性和阳离子配合物的独特实例。 (C)1998 Elsevier Science S.A. [参考:34]

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