[{(Me₃Si)₂N}₂Sm{μ(η⁸:η⁸‐C₈H₈)}‐Sm{N(SiMe₃)₂}₂]: An Inverse Organolanthanoid Sandwich Complex

Abstract

Two amidosamarium units sandwich the planar cyclooctatetraene (cot) ligand in the title compound 1; this compound, the first example of an inverse-sandwich complex with a 4f metal, is accessible from [(cot)Sm(μ-Cl)(thf)2] and the appropriate sodium amide. Analogous reactions with Y, Gd, Er, and Lu compounds lead only to half sandwich complexes.