Nickel pre-catalysts bearing [(N)-imidoylamidine] ligands; influence of the presence of pyridine and pentafluorophenyl groups in ligand backbone on the reactivity in ethylene polymerizations
Artículo

Open/ Download
Publication date
2012Metadata
Show full item record
Cómo citar
Peoples, Brian C.
Cómo citar
Nickel pre-catalysts bearing [(N)-imidoylamidine] ligands; influence of the presence of pyridine and pentafluorophenyl groups in ligand backbone on the reactivity in ethylene polymerizations
Author
Abstract
In this contribution the synthesis and polymerization activity of the nickel complexes [NiBr2{N0-(2,6-
diisopropylphenyl)-N-[1-(2,6-diisopropylphenylimine)ethyl]-N-(2,3,4,5,6-pentafluorophenyl)acetam
idine}] (2), [NiBr2{N0-(2,6-diisopropylphenyl)-N-[1-(2,6-diisopropylphenylimine)ethyl]-N-(2,3,4,5,6-
pentafluorophenylimine)ethylacetamidine}] (2a) and [NiBr2{N-(2,6-diisopropylphenyl)-N-[1-(2,6-
diisopropylphenylimine)]-N-(pyridin-4-yl)acetamidine}] (3) are reported. The variation of the
phenyl substituents on the b amine was found to influence the polymerization activity of the
complexes. The electron withdrawing/donating capacity of the substituted ring was found to
be correlated with the polymerization activity, with the pentafluoro substituted ring increasing the
polymerization activity and the pyridine ring decreasing the activity. The ligands and complexes
were characterized using standard techniques and the polymer properties analyzed.
General note
Artículo de publicación ISI
Patrocinador
FONDECYT
11060384 and 1100286
Identifier
URI: https://repositorio.uchile.cl/handle/2250/125658
DOI: doi:10.1016/j.jorganchem.2011.11.035
Quote Item
Journal of Organometallic Chemistry 700 (2012) 147-153
Collections