Abstract

Yttrium dialkyl complexes [N,N′-R2-tacn-N″-(CH 2)2NBut]Y(CH2SiMe3) 2 (R = Me, Pri; tacn = 1,4,7-triazacyclononane) were prepared; when activated with [PhNMe2H][B(C6F5)4] these complexes form cationic alkyl species that are active ethene polymerisation catalysts.

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