Synthesis of a scandium dimethylbenzyl complex supported by a ferrocene diamide ligand was accomplished by alkane elimination from Sc(CH 2Xy-3,5) 3(THF) 2. The scandium dimethylbenzyl complex Sc(fc[NSi( t-Bu)Me 2] 2)(CH 2Xy-3,5)(THF), 2-(CH 2Xy-3,5)(THF) , was used as a starting material for the synthesis of the corresponding chloride-bridged dimer, (2-Cl) 2, which, in turn, led to a scandium bis( neo-pentyl) ate salt, Li[ 2-Np 2] . Attempts to remove the coordinated THF molecule from 2-(CH 2Xy-3,5)(THF) with AlMe 3led to the isolation of a scandium methyl complex with two coordinated AlMe 3molecules, 2-Me(AlMe 3) 2. Compound 2-Me(AlMe 3) 2led to a scandium methyl complex, 2-Me(THF) 2, by stirring in THF. All ferrocene diamido compounds were characterized by X-ray crystallography. DFT calculations on model compounds were used to explain the stability of the compounds synthesized and to probe the existence of an iron−scandium interaction. Compounds 2-(CH 2Xy-3,5)(THF) and 2-Me(AlMe 3) 2polymerize l-lactide. [ABSTRACT FROM AUTHOR]