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@article{McTavish:2007:10.1016/j.molcata.2006.10.028,
author = {McTavish, S and Britovsek, GJP and Smit, TM and Gibson, VC and White, AJP and Williams, DJ},
doi = {10.1016/j.molcata.2006.10.028},
journal = {J. Mol. Catal. A: Chem.},
pages = {293--300},
title = {Iron-based ethylene polymerization catalysts supported by bis(imino)pyridine ligands: Derivatization via deprotonation/alkylation at the ketimine methyl position.},
url = {http://dx.doi.org/10.1016/j.molcata.2006.10.028},
volume = {261},
year = {2007}
}

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TY  - JOUR
AB  - Bis(imino)pyridine ligands, L [where L = 2,6-(ArNCR1)2C5H3N R1 = Et, iPr, CH2CH2Ph or CH(CH2Ph)2 and Ar = 2,4,6-(Me)3C6H2 (MES) or 2,6-(iPr)2C6H3 (DIPP)] have been prepd. by deprotonation of the parent ketimine ligand (R1 = Me) using lithium diisopropylamide (LDA), followed by alkylation with the appropriate alkylhalide.  The corresponding iron dichloride complexes LFeCl2 are highly active ethylene polymn. catalysts upon treatment with methylaluminoxane (MAO), with activities in the range of 3000-18,000 g/mmol bar h.  The mol. wts. (Mn) of the resultant polyethylenes lie in the range of 6500-24,000 with broad mol. wt. distributions (16.5-38.0).  The nature of the imine carbon substituent has a marked effect on the polymer mol. wt. whereas the catalyst activity is largely unaffected by changes to this substituent. [on SciFinder(R)]
AU  - McTavish,S
AU  - Britovsek,GJP
AU  - Smit,TM
AU  - Gibson,VC
AU  - White,AJP
AU  - Williams,DJ
DO  - 10.1016/j.molcata.2006.10.028
EP  - 300
PY  - 2007///
SN  - 1381-1169
SP  - 293
TI  - Iron-based ethylene polymerization catalysts supported by bis(imino)pyridine ligands: Derivatization via deprotonation/alkylation at the ketimine methyl position.
T2  - J. Mol. Catal. A: Chem.
UR  - http://dx.doi.org/10.1016/j.molcata.2006.10.028
VL  - 261
ER  -

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