Preparation, Structure, and Ethylene Polymerization Behavior of Bis(imino)pyridyl Chromium(III) Complexes
作者:Miguel A. Esteruelas、Ana M. López、Luis Méndez、Montserrat Oliván、Enrique Oñate
DOI:10.1021/om020561u
日期:2003.2.1
The synthesis, characterization, and ethylene polymerization behavior of a family of chromium(III) complexes of formula [2,6-bis(imino)pyridyl]CrCl3 is reported. The X-ray diffraction studies of two of the new compounds show that the geometry around the chromium atom is octahedral, with the three chlorine ligands in a mer disposition. The distance between the metal and one of the trans-disposed chlorine
Iron and Cobalt Ethylene Polymerization Catalysts: Variations on the Central Donor
作者:George J. P. Britovsek、Vernon C. Gibson、Olivier D. Hoarau、Stefan K. Spitzmesser、Andrew J. P. White、David J. Williams
DOI:10.1021/ic034040q
日期:2003.6.1
Three classes of ligands, designed to explore the effect of variations on the central pyridine donor core in bis(imino)pyridine iron and cobaltethylenepolymerizationcatalysts of the general formula [LMCl(2)] (M = Fe or Co), have been prepared. The first class comprises six-membered N-heterocycles (pyrimidine and triazine) and the second class five-membered heterocycles (furan and thiophene) as the