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Three new binaphthyl-bridged Schiff base complexes featuring different phenolate substituents (meta-Me, ortho,para-di-Cl, ortho,para-di-Br) were synthesized. 1 H and 13 C NMR analyses indicated that the cis-β isomers are preferentially formed in any case. These complexes were tested as precatalysts for ethylene and propene polymerization comparing their behaviour to that of related...
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