Jump to main content
Jump to site search

Issue 15, 2017
Previous Article Next Article

Rare earth metal bisamido complexes with an NNO tridentate ligand and catalytic activity for the selective polymerization of isoprene

Author affiliations

Abstract

The reaction of 4-((2-(pyridin-2-yl)ethyl)imino)pent-2-en-2-ol (HL, 1) with 1 equiv. of [(Me3Si)2N]3RE(μ-Cl)Li(THF)3 produces rare earth metal bisamido complexes incorporating the pyridyl-functionalized β-ketoiminato NNO tridentate ligand [LRE{[N(SiMe3)2]2}] (L = CH3C(O)[double bond, length as m-dash]CHC(CH3)[double bond, length as m-dash]NCH2CH2(2-C5H4N), RE = Y (2), Nd (3), Sm (4), Gd (5), Dy (6), Er (7) and Yb (8)). All the complexes were fully characterized via elemental and spectroscopic analyses, and their structures were further determined via single-crystal X-ray diffraction study. Additionally, complexes 2–8 were investigated as precatalysts for isoprene polymerization. The results showed that except for complexes 4 and 8, all the complexes could effectively initiate the polymerization of isoprene to afford polyisoprene with high regio- and stereo-selectivity (1,4-cis selectivity up to 97.1%) in the presence of cocatalysts.

Graphical abstract: Rare earth metal bisamido complexes with an NNO tridentate ligand and catalytic activity for the selective polymerization of isoprene

Back to tab navigation

Supplementary files

Publication details

The article was received on 01 May 2017, accepted on 21 Jun 2017 and first published on 22 Jun 2017


Article type: Paper
DOI: 10.1039/C7NJ01454F
Citation: New J. Chem., 2017,41, 7723-7728
  •   Request permissions

    Rare earth metal bisamido complexes with an NNO tridentate ligand and catalytic activity for the selective polymerization of isoprene

    X. Gu, S. Wang, Y. Wei, X. Zhu, S. Zhou, Z. Huang and X. Mu, New J. Chem., 2017, 41, 7723
    DOI: 10.1039/C7NJ01454F

Search articles by author

Spotlight

Advertisements