Structural Characterization of a Tris‐Agostic LanthanoidHSi Interaction

Abstract

All the tert-butyl groups of [Er{N(tBu)[Si(CH3)2(H)]}3] (structure shown on the right) reside on the same face of the N3 plane, whereas all SiCH3 groups are rotated toward the periphery of the molecule. This results in ErH interatomic distances of 231.7–236.7 pm for the SiH moieties folded in toward the metal center.