| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 65463 | Journal of Molecular Catalysis A: Chemical | 2014 | 5 Pages |
•Novel complex [Ni(η5-C5H3R2)(Cl)(SIMes)] was synthesized and characterized.•Complexes [Ni(Cp)(X)(NHC)] combined with MAO polymerize methyl methacrylate.•Syndiotactic-rich, high molecular weight PMMAs were obtained.•Coordinative-anionic, Al-centered mechanism of MMA polymerization is suggested.
The Ni(II) complexes [Ni(η5-C5H3R2)(X)(NHC)] 1a–f combined with MAO have been tested in methyl methacrylate (MMA) polymerization. We have found that the most active complex 1f, bearing the bulky 2,6-diisopropenylphenyl substituents in the NHC ligand, effected the MMA polymerization with TOF up to 200 h−1. Predominantly syndiotactic, high molecular weight PMMAs were obtained suggesting an anionic, MAO-centered polymerization mechanism.
Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (138 K)Download as PowerPoint slide
