• DOI:10.1039/c2dt31932b
• Corpus ID: 6481705

Bis(imino)diphenylamido rare-earth metal dialkyl complexes: synthesis, structure, and catalytic activity in living ring-opening ε-caprolactone polymerization and copolymerization with γ-butyrolactone.

@article{Du2013BisiminodiphenylamidoRM,
  title={Bis(imino)diphenylamido rare-earth metal dialkyl complexes: synthesis, structure, and catalytic activity in living ring-opening $\epsilon$-caprolactone polymerization and copolymerization with $\gamma$-butyrolactone.},
  author={Gaixia Du and Yanling Wei and Wei Zhang and Yuping Dong and Zhengguo Lin and Huan He and Shaowen Zhang and Xiaofang Li},
  journal={Dalton transactions},
  year={2013},
  volume={42 4},
  pages={
          1278-86
        }
}

• Gaixia Du, Yanling Wei, +5 authors Xiaofang Li
• Published 28 January 2013
• Chemistry
• Dalton transactions

Bis(imino)diphenylamido rare-earth metal dialkyl complexes [o-(2,6-(i)Pr(2)-C(6)H(3)-N=C-C(6)H(4))(2)-N]Ln(CH(2)SiMe(3))(2) (1: Ln = Sc; 2: Ln = Lu; 3: Ln = Y) have been synthesized in good yields and structurally characterized by elemental analysis, NMR spectroscopy, and single-crystal X-ray diffraction studies. They serve as highly efficient single-component catalysts both for the living ring-opening ε-caprolactone polymerization and random copolymerization with γ-butyrolactone, with the activity being dependent on the steric hindrance around the metal center, yielding high molecular weight PCLs or P(CL-co-BL)s with narrow molecular weight distributions.