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Problems and solutions for alkene polymerisation catalysts incorporating Schiff-bases; migratory insertion and radical mechanisms of catalyst deactivation
- Knight, Paul D., Clarke, Adam J., Kimberley, Brian S., Jackson, Richard A., Scott, Peter
- Chemical communications 2002 no.4 pp. 352-353
- catalysts, ethylene, polymerization, schiff bases, thermodynamics, zirconium
- Steric blocking of an intramolecular 1,2-migratory insertion reaction of a zirconium salicylaldiminato complex leads to a long-lived catalyst for ethene polymerisation, but promotes a new radical catalyst decomposition mechanism in certain instances; kinetic and thermodynamic parameters for both pathways have been established.