The reaction of 2-6-iPr2C6H3NHSiMe3 with Tb(CH2SiMe3)3(THF)2 in benzene at room temperature afforded a binuclear terbium complex Tb2{μ-CH2SiMe2NC6H3iPr2-2, 6}3(THF)3. X-ray diffraction revealed that Tb atoms were bridged by three methylene units. One Tb atom was six-coordinated by two nitrogen atoms, three methylene carbons, and one THF molecule, while the other Tb atom was six-coordinated by one nitrogen atom, three methylene carbons, and two THF molecules. Both Tb atoms adopted a distorted trigonal prism geometry.
Reaction of(C5Me4SiMe3)Y(CH2SiMe)2(THF) with two equivalents of iPrN=C=NiPr in hexane at room temperature afforded a mixed-ligand yttrium complex(C5Me4SiMe3)(iPrN)2CCH2SiMe32Y.X-ray diffraction revealed that the center metal was nine-coordinated by one cyclopentadienyl ring and two amidinate ligands, and adopted a four-legged piano stool geometry.
