High tetraalkylaluminate fluxionality in half-sandwich complexes of the trivalent rare-earth metalsElectronic supplementary information (ESI) available: complete synthesis and characterization data. See http://www.rsc.org/suppdata/cc/b2/b212754g/

Abstract

Steric factors govern the formation of half-sandwich complexes (C5Me4R)Ln[N(SiHMe2)2]2 according to acid-base reactions utilising Ln[N(SiHMe2)2)3(thf)2 and substituted cyclopentadienes. Subsequent trimethylaluminium-promoted silylamide elimination produces the first half-sandwich bis(tetramethylaluminate) complexes (C5Me4R)Ln(AlMe4)2.