Superbulky Ligands and Trapped Electrons: New Perspectives in Divalent Lanthanide Chemistry


  • This work was supported by the Deutsche Forschungsgemeinschaft, Bonn, within the frameworks of the SFB 608 and the SPP 1166.


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Spectacular developments in recent years, especially the discovery of an anionic complex of divalent lanthanum, in which the electron is trapped in a localized 5d1 SOMO (see structure of the anion of [K([2.2.2]crypt)][LaCp′′3] (Cp′′=1,3-(SiMe3)2C5H3); La red, C gray, Si black), have brought new impetus to the solution chemistry of divalent lanthanides.