Redox‐Controlled Olefin (Co)Polymerization Catalyzed by Ferrocene‐Bridged Phosphine‐Sulfonate Palladium Complexes. (2nd November 2015)

• Record Type: Journal Article
• Authors: Chen, Min; Yang, Bangpei; Chen, Changle
• Is Part Of: Angewandte Chemie. Volume 127:Number 51(2015)
• Page Start: 15740
• Page End: 15744
• Publication Date: 2015-11-02
• Subjects: Copolymerisationen -- Olefinpolymerisation -- Palladium‐Katalyse -- Polare Monomere -- Redoxchemie; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201507274
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: The facile and reversible interconversion between neutral and oxidized forms of palladium complexes containing ferrocene‐bridged phosphine sulfonate ligands was demonstrated. The activity of these palladium complexes could be controlled using redox reagents during ethylene homopolymerization, ethylene/methyl acrylate copolymerization, and norbornene oligomerization. Specifically in norbornene oligomerization, the neutral complexes were not active at all whereas the oxidized counterparts showed appreciable activity. In situ switching between the neutral and oxidized forms resulted in an interesting "off" and "on" behavior in norbornene oligomerization. This work provides a new strategy to control the olefin polymerization process.