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作者：
DOMINIC R. RUSSO, ALYSSA N. GAISER, AMY N. PRICE, DUMITRU-CLAUDIU SERGENTU, JENNIFER N. WACKER, NICHOLAS KATZER, APPIE A. PETERSON, JACOB A. BRANSON, XIAOJUAN YU, AND STEFAN G. MINASIAN
▲ 链接：
https://www.science.org/doi/10.1126/science.adr3346
▲ 摘要：
自从在曼哈顿计划期间首次研究锕系有机金属在同位素分离中的应用以来，人们对锕系-碳键的兴趣一直存在。跨钚有机金属很少被分离和结构表征，可能是由于同位素库存有限，缺乏适当的实验室基础设施，以及所需厌氧条件的内在困难。
二茂铁是夹在两个碳环之间的铁离子，其结构的阐明是有机金属化学理论和实践的基础。在随后的几十年里，许多类似的金属夹层化合物被制备和应用。研究者将基序扩展到比铀重的放射性元素锫。
他们的实验需要在亚毫克的尺度上快速合成和表征，以补偿正在进行的衰变。光谱和理论分析支持了金属环配体和f轨道之间的共价相互作用。
▲ Abstract：
Interest in actinide–carbon bonds has persisted since actinide organometallics were first investigated for applications in isotope separation during the Manhattan Project. Transplutonium organometallics are rarely isolated and structurally characterized, likely owing to limited isotope inventories, a scarcity of suitable laboratory infrastructure, and intrinsic difficulties with the anaerobic conditions required. Elucidating the structure of ferrocene, an iron ion sandwiched between two carbon rings, was foundational to the theory and practice of organometallic chemistry. In the ensuing decades, numerous analogous metal sandwich compounds have been prepared and applied. Russo et al. now extend the motif to berkelium, a radioactive element heavier than uranium. Their experiments required rapid synthesis and characterization on a submilligram scale to compensate for the ongoing decay. Spectroscopic and theoretical analysis supported covalent interactions between the cyclic ligands and f orbitals of the metal.
