BibTex format
@article{Britovsek:2000:10.1002/1521-3765(20000616)6:12<2221::aid-chem2221>3.3.co;2-l,
author = {Britovsek, GJP and Mastroianni, S and Solan, GA and Baugh, SPD and Redshaw, C and Gibson, VC and White, AJP and Williams, DJ and Elsegood, MRJ},
doi = {10.1002/1521-3765(20000616)6:12<2221::aid-chem2221>3.3.co;2-l},
journal = {Chemistry A European Journal},
pages = {2221--2231},
title = {Oligomerisation of ethylene by bis(imino)pyridyliron and -cobalt complexes},
url = {http://dx.doi.org/10.1002/1521-3765(20000616)6:12<2221::aid-chem2221>3.3.co;2-l},
volume = {6},
year = {2000}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - A series of bis(imino)pyridyliron and -cobalt complexes [{2,6- (CR=NAr)<inf>2</inf>C<inf>5</inf>H<inf>3</inf>N}MX<inf>2</inf>] (R=H, Me; M=Fe, Co; X=Cl, Br) 8-16 containing imino- aryl rings (Ar) with at least one small ortho substituent, as well as Ar=biphenyl and Ar=naphthyl, has been synthesised. Crystallographic analyses of complexes 9 (Ar=2,3-dimethylphenyl), 13 and 14 (Ar=biphenyl; X=Cl or Br, respectively) reveal a distorted trigonal-bipyramidal geometry in the solid state. These complexes, in combination with methyl aluminoxane (MAO), are active catalysts for the oligomerisation of ethylene, yielding >99% linear α-olefin mixtures that follow a Schulz-Flory distribution. Iron ketimine (R=Me) precatalysts give the highest activities and a greater α-value than their aldimine (R=H) analogues. Cobalt precatalysts follow a similar trend, though their activities are almost two orders of magnitude lower than those of the corresponding iron catalysts. Ethylene pressure studies on cobalt precatalyst 15 reveal a first-order dependence on ethylene for both the rate of propagation and the rate of chain transfer, and a pressure independence of the α value.
AU - Britovsek,GJP
AU - Mastroianni,S
AU - Solan,GA
AU - Baugh,SPD
AU - Redshaw,C
AU - Gibson,VC
AU - White,AJP
AU - Williams,DJ
AU - Elsegood,MRJ
DO - 10.1002/1521-3765(20000616)6:12<2221::aid-chem2221>3.3.co;2-l
EP - 2231
PY - 2000///
SN - 0947-6539
SP - 2221
TI - Oligomerisation of ethylene by bis(imino)pyridyliron and -cobalt complexes
T2 - Chemistry A European Journal
UR - http://dx.doi.org/10.1002/1521-3765(20000616)6:12<2221::aid-chem2221>3.3.co;2-l
VL - 6
ER -