Salt eliminations Sandwich complexes

Various half-sandwich rare-earth bis(tetramethylaluminate) complexes have been readily synthesized by methane elimination reactions between Ln(AlMe4)3 derivatives and appropriate HCp ligands (Scheme 21, A) [119-121]. Reaction of homoleptic tetramethylaluminate derivatives with phospholide salts also allowed access to the corresponding half-sandwich bis(tetramethylaluminate) complexes through a salt-metathesis route (Scheme 21, B) [122]. 

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