Synthesis of bis(methylcyclopentadienyl)(piperidino)lanthanoids and their catalytic behavior for polymerization of methyl methacrylate
摘要:
Reaction of anhydrous LnCl(3) with MeC5H4Na, followed by the treatment with LiNC5H10 in toluene at 0 degrees C, affords the neutral amido complexes (MeC5H4)(2)LnNC(5)H(10)(HNC5H10) (Ln = Yb (1), Er (2), Y (3)). The X-ray analysis determined the crystal structure of 2. All of these complexes exhibit good catalytic activity for the polymerization of methyl methacrylate. (C) 1998 Elsevier Science S.A. All rights reserved.