A Heterobimetallic Complex With an Unsupported Uranium(III)−Aluminum(I) Bond: (CpSiMe₃)₃U−AlCp* (Cp* = C₅Me₅)

A heterobimetallic complex with the first unsupported bond between an actinide and a group 13 element, (CpSiMe3)3U−AlCp* (Cp* = C5Me5) (1), was synthesized by reaction of (CpSiMe3)3U and 1/4(Cp*Al)4 in toluene. Density functional theory calculations indicate that the U−Al bond exhibits some covalent character resulting from a Cp*Al→U charge-transfer.本研究合成了首例含锕系元素与第13族元素之间无支撑金属键的异双金属配合物(CpSiMe3)3U−AlCp*（其中Cp* = C5Me5，记为化合物1），该配合物通过(CpSiMe3)3U与1/4(Cp*Al)4在甲苯中反应制得。密度泛函理论（Density Functional Theory, DFT）计算结果表明，U−Al键具有一定的共价特征，该特征源自Cp*Al向U的电荷转移作用。