Cerium(III) and Neodymium(III) Amides Derived from a Chelating 2-Pyridyl Amido Ligand

Homoleptic Ce(lll) and Nd(lll) triamides [LnL3] [Ln = Ce (1) or Nd (2)] and the heterobimetallic amide-alkoxide derivatives [U (MU)OBu)M(tmeda)] [Ln = Ce, M-Na (3); Ln = Nd, M - Na (4); Ln = Nd, M = K (5)] supported by the bulky [N(SiBu Me2)(2CsHsN-G-Me)]- ligand (L-) have been successfully synthesized and characterized. Complexes 1-3 and 5 show a high activity toward the ring-opening polymerization of 6-caprolactone.