Synthesis, characterization and ε-caprolactone polymerization properties of ferrocenyl modified half-sandwich rare-earth metal complexes

Salt metathesis of RECl 3 with FcC 5 Me 4 Li followed by the addition of LiCH 2 C 6 H 4 NMe 2 - o in THF gave the ferrocenyl functionalized half-sandwich rare-earth metal bis( o -dimethylaminobenzyl) complexes (FcC 5 Me 4 )RE(CH 2 C 6 H 4 NMe 2 - o ) 2 (RE = Sc, Y, Lu) in good isolated yields.