Synthesis, bonding properties and ether activation reactivity of cyclobutadienyl-ligated hybrid uranocenes.

ABSTRACT: A series of hybrid uranocenes consisting of uranium(iv) sandwiched between cyclobutadienyl (Cb) and cyclo-octatetraenyl (COT) ligands has been synthesized, structurally characterized and studied computationally. The dimetallic species [(η⁴-Cb'''')(η⁸-COT)U(μ:η²:η⁸-COT)U(THF)(η⁴-Cb'''')] (1) forms concomitantly with, and can be separated from, monometallic [(η⁴-Cb'''')U(THF)(η⁸-COT)] (2) (Cb'''' = 1,2,3,4-tetrakis(trimethylsilyl)cyclobutadienyl, COT = cyclo-octatetraenyl). In toluene solution at room temperature, 1 dissociates into 2 and the unsolvated uranocene [(η⁴-Cb'''')U(η⁸-COT)] (3). By applying a high vacuum, both 1 and 2 can be converted

SUBMITTER: Tsoureas N 

PROVIDER: S-EPMC8179396 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature