Exploring steric effect of electron-donating group in palladium and nickel mediated ethylene polymerization and copolymerization with polar monomers

[Display omitted] •Steric effect of key electron-donating substituents is comprehensively studied.•Steric effect plays an important role on tuning molecular weight in ethylene polymerization.•Steric effect affects incorporation in ethylene copolymerization with polar monomer.•Flexible cyclohexyl/rig...

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