Triamidoamine complexes of scandium, yttrium and the lanthanides

Abstract

Synthesis of the simple triamidoamine complexes of the group 3 and lanthanide elements is achieved for the first time by reaction of [Li₃(NN′₃)(thf)₃] [NN′₃ = N(CH₂CH₂NSiMe₃)₃] with the metal trichlorides; the ‘ate’ complexes [M(NN′₃)ClLi(thf)₃] (M = Sc, Y, La) thus produced are converted smoothly to [M(NN′₃)] on sublimation in vacuo.