Structural, Electrochemical, and Magnetic Studies of Bulky Uranium(III) and Uranium(IV) Metallocenes
作者:Michael A. Boreen、Daniel J. Lussier、Brighton A. Skeel、Trevor D. Lohrey、Fabian A. Watt、David K. Shuh、Jeffrey R. Long、Stephan Hohloch、John Arnold
DOI:10.1021/acs.inorgchem.9b02719
日期:2019.12.16
formation of the bent metallocene uranium(III) complex (CpiPr4)2UI (1), which is then used to obtain the uranium(IV) and uranium(III) dihalides (CpiPr4)2UIVX2 (2-X) and [cation][(CpiPr4)2UIIIX2] (3-X, [cation]+ = [Cp*2Co]+, [Et4N]+, or [Me4N]+) as mononuclear, donor-free complexes, for X- = F-, Cl-, Br-, and I-. Interestingly, reaction of 1 with chloride and cyanide salts of alkali metal ions leads to isolation
将庞大的四异丙基环戊二烯基(CpiPr4)配体的钾盐添加到UI3(1,4-二恶烷)1.5中导致形成弯曲的茂金属铀(III)络合物(CpiPr4)2UI(1)然后用于获得铀(IV)和铀(III)二卤化物(CpiPr4)2UIVX2(2-X)和[阳离子] [(CpiPr4)2UIIIX2](3-X,[阳离子] + = [Cp * 2Co] + ,[Et4N] +或[Me4N] +)作为单核,无供体的配合物,对于X- = F-,Cl-,Br-和I-。有趣的是,1与碱金属离子的氯化物和氰化物盐的反应导致氯化物和氰化物桥接的配位固体[(CpiPr4)2U(μ-Cl)2Cs] n(4-Cl)和[(CpiPr4)的分离2U(μ-CN)2Na(OEt2)2] n(4-CN)。从1提取碘配体可进一步分离“无碱” 金属茂阳离子盐[(CpiPr4)2U] [B(C6F5)4](5)及其DME加合物[(CpiPr4)2U(DME)]