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Formation of Novel T‑Shaped NNN Ligands via Rare-Earth Metal-Mediated Si–H Activation

Posted on 2014-02-03 - 00:00
Reactions of silylamides [Ln­{N­(SiHMe2)2}3(thf)2] with sterically crowded terphenylamine DmpNH2 (Dmp = 2,6-Mes2C6H3 with Mes = 2,4,6-Me3C6H2) afforded via a template reaction the formation of a new tridentate ligand, and derived complexes of composition [LnN­{SiMe2N­(Dmp)}2] (Ln = Ce, Pr) were obtained. Usage of the even more bulky amine Ar*NH2 (Ar* = 2,6-Trip2C6H3 with Trip = 2,4,6-iPr3C6H2) yielded the free protonated ligand NH­{SiMe2NH­(Ar*)}2.

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