Jump to main content
Jump to site search

Issue 4, 2013
Previous Article Next Article

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

Author affiliations

Abstract

Bis(imino)diphenylamido rare-earth metal dialkyl complexes [o-(2,6-iPr2-C6H3–N[double bond, length as m-dash]C–C6H4)2–N]Ln(CH2SiMe3)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.

Graphical abstract: 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

Back to tab navigation

Supplementary files

Publication details

The article was received on 24 Aug 2012, accepted on 18 Oct 2012 and first published on 23 Oct 2012


Article type: Paper
DOI: 10.1039/C2DT31932B
Citation: Dalton Trans., 2013,42, 1278-1286
  •   Request permissions

    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

    G. Du, Y. Wei, W. Zhang, Y. Dong, Z. Lin, H. He, S. Zhang and X. Li, Dalton Trans., 2013, 42, 1278
    DOI: 10.1039/C2DT31932B

Search articles by author

Spotlight

Advertisements