Abstract:Novel amine bis(phenolate) zirconium dibenzyl complexes were synthesized in quantitative
yields from a versatile family of chelating amine−bis((2-hydroxyaryl)methyl) ligand precursors, their X-ray structures solved, and their reactivity in the polymerization of 1-hexene in
the presence of B(C6F5)3 studied. Several minor peripheral structural modifications were
studied and found to have a major influence on the catalyst performance. Thus, a variety of
reactivities, ranging from extremely high to negligible, wer… Show more
“…Ligand LH 2 (L=Me 2 NCH 2 CH 2 N(CH 2 -(2-O-C 6 H 2 -Bu t 2 -3,5)) 2 ) [8] , and yttrium trisalkyl complex YR 3 (R= CH 2 C 6 H 4 NMe 2 -o) [9] were prepared according to the literature methods.…”
“…Ligand LH 2 (L=Me 2 NCH 2 CH 2 N(CH 2 -(2-O-C 6 H 2 -Bu t 2 -3,5)) 2 ) [8] , and yttrium trisalkyl complex YR 3 (R= CH 2 C 6 H 4 NMe 2 -o) [9] were prepared according to the literature methods.…”
“…[43,44] In a typical procedure, N,NЈ-bis(2-hydroxyethyl)ethylenediamine (2.22 g, 15 mmol) in MeOH along with 2,4-di-tert-butylphenol (6.19 g, 30 mmol) and formaldehyde (3 mL, 41 %, 35 mmol) was stirred for 2 d. The solution was kept in air to evaporate the solvent partially. A white solid appeared within 2 d. After filtration, the solid was washed with cold methanol and dried in air.…”
“…A range of tetradentate nitrogen and oxygen donor ligands, L 1-21 , were prepared using previously reported procedures, 59,62 on a 2.5 mmol scale in a carousel reactor (Radleys, UK), Tables 1 and 2. The resulting white solids were isolated in 68-83% yield and were characterised by 1 H NMR spectroscopy.…”
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