Publications
133 results found
Britovsek GJP, Woo GYY, Assavathorn N, 2003, Synthesis and reactivity of water-soluble platinum(II) complexes containing nitrogen ligands, JOURNAL OF ORGANOMETALLIC CHEMISTRY, Vol: 679, Pages: 110-115, ISSN: 0022-328X
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- Citations: 15
Britovsek GJP, Gibson VC, Hoarau OD, et al., 2003, Iron and cobalt ethylene polymerization catalysts: Variations on the central donor, INORGANIC CHEMISTRY, Vol: 42, Pages: 3454-3465, ISSN: 0020-1669
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- Citations: 169
Britovsek GJP, Baugh SPD, Hoarau O, et al., 2003, The role of bulky substituents in the polymerization of ethylene using late transition metal catalysts: a comparative study of nickel and iron catalyst systems, INORGANICA CHIMICA ACTA, Vol: 345, Pages: 279-291, ISSN: 0020-1693
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- Citations: 142
Britovsek GJP, Cohen SA, Gibson VC, 2003, Chain growth reaction process, WO03014046
Britovsek GJP, Cohen SA, Gibson VC, 2002, Chain growth reaction process using zinc alkyls for preparation of olefin oligomers, 2003014046
Britovsek GJP, Clentsmith GKB, Gibson VC, et al., 2002, The nature of the active site in bis(imino)pyridine iron ethylene polymerisation catalysts, CATALYSIS COMMUNICATIONS, Vol: 3, Pages: 207-211, ISSN: 1566-7367
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- Citations: 109
Britovsek GJP, Cohen SA, Gibson VC, et al., 2002, Iron-catalyzed polyethylene chain growth on zinc: Linear α-olefins with a poisson distribution, Angewandte Chemie - International Edition, Vol: 41, Pages: 489-491, ISSN: 1433-7851
Bis(imino)pyridineiron complexes are not only highly active for ethylene polymerization, they are shown to catalyze efficient polyethylene chain growth at zinc centers - formally an iron-catalyzed Aufbaureaktion on zinc (see scheme). The grown alkyl chains can be displaced from the zinc centers by an olefin exchange reaction catalyzed, for example, [Ni(acac)2] (acac = acetylacetonate) to give linear α-olefins with a Poisson distribution.
Britovsek GJP, Cohen SA, Gibson VC, et al., 2002, Iron-catalyzed polyethylene chain growth on zinc:: Linear α-olefins with a Poisson distribution, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Vol: 41, Pages: 489-491, ISSN: 1433-7851
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- Citations: 177
Britovsek GJP, Gibson VC, Spitzmesser SK, et al., 2002, Cationic 2,6-bis(imino)pyridine iron and cobalt complexes: synthesis, structures, ethylene polymerisation and ethylene/polar monomer co-polymerisation studies, JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, Pages: 1159-1171, ISSN: 1472-7773
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- Citations: 151
Britovsek GJP, Clentsmith GKB, Gibson VC, et al., 2001, Spectroscopic studies on iron-based ethylene polymerization catalysts., ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol: 222, Pages: U415-U415, ISSN: 0065-7727
Britovsek GJP, Gibson VC, Mastroianni S, et al., 2001, Imine versus amine donors in iron-based ethylene polymerisation catalysts, EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, Pages: 431-437, ISSN: 1434-1948
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- Citations: 101
Magill AM, McGuinness DS, Cavell KJ, et al., 2001, Palladium(II) complexes containing mono-, bi- and tridentate carbene ligands. Synthesis, characterisation and application as catalysts in C-C coupling reactions, JOURNAL OF ORGANOMETALLIC CHEMISTRY, Vol: 617, Pages: 546-560, ISSN: 0022-328X
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- Citations: 336
Britovsek GJP, Clentsmith GKB, Gibson VC, et al., 2001, Spectroscopic studies on iron-based ethylene polymerization catalysts (Meeting abstract CATL-040), Washington, D.C., Abstracts of papers, 222nd ACS national meeting, Chicago, IL, United States, 26 - 30 August 2001, Publisher: American Chemical Society
Britovsek GJP, Gibson VC, Kimberley BS, et al., 2001, Bis(imino)pyridyl iron and cobalt complexes: the effect of nitrogen substituents on ethylene oligomerisation and polymerisation, JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, Pages: 1639-1644, ISSN: 1472-7773
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- Citations: 119
Britovsek GJP, Bruce M, Gibson VC, et al., 2000, Iron and cobalt ethylene polymerization catalysts bearing 2,6-bis(imino)pyridyl ligands: Synthesis, structures, and polymerization studies, Chemtracts, Vol: 13, Pages: 303-308, ISSN: 1431-9268
Chelating 2,6-bis(imino)pyridyl ligands, readily prepared via condensation reactions, coordinate to Fe(II), and Fe(III), and Co(II) halide salts to give monomeric, paramagnetic complexes. Activation of these compounds with methylaluminoxane results in highly reactive catalytic species for the production of linear polyethylene. Iron-based catalysts were found to be more active than cobalt-based systems, and ketimine ligands generally imparted enhanced efficiency compared to the analogous aldimine ligands. Bulky substituents at the ortho positions of the aryl groups were found to be crucial for optimal catalytic activity. Investigations of the various reaction conditions, including amount of MAO, ethylene pressure, reaction time and temperature, revealed that chain termination likely proceeds via two competing mechanisms, namely β-H transfer and chain transfer to aluminum.
Gibson VC, Britovsek GJP, 2000, Advances in iron and cobalt ethylene polymerization systems., ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol: 219, Pages: U389-U389, ISSN: 0065-7727
Gibson VC, Britovsek GJP, Spitzmesser SK, 2000, Cationic iron and cobalt complexes containing bis(imino)pyridyl ligands., ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol: 219, Pages: U426-U426, ISSN: 0065-7727
Gibson VC, Britovsek GJP, Spitzmesser SK, 2000, Cationic iron and cobalt complexes containing bis(imino)pyridyl ligands, Polymer Preprints, Vol: 41
Britovsek GJP, Gibson VC, Spitzmesser SK, 2000, Cationic Polymerisation Catalysts, WO 00/69869
Gibson VC, Britovsek GJP, Spitzmesser SK, 2000, Cationic iron and cobalt complexes containing bis(imino)pyridyl ligands, Polymer Preprints, Vol: 41
Gibson VC, Britovsek GJP, 2000, Advances in iron and cobalt ethylene polymerization systems, Abstracts of Papers of the American Chemical Society, Vol: 219, Pages: 229-OLY, ISSN: 0065-7727
Britovsek GJP, Mastroianni S, Solan GA, et al., 2000, Oligomerisation of ethylene by bis(imino)pyridyl iron and -cobalt complexes, Chemistry-A European Journal, Vol: 6, Pages: 2221-2231, ISSN: 0947-6539
Griffiths EAH, Britovsek GJP, Gibson VC, et al., 1999, Full ab initio calculations on bis(imino)pyridine iron catalysts for ethylene polymerization., ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol: 218, Pages: U762-U762, ISSN: 0065-7727
Gibson VC, Mastroianni S, McTavish SJ, et al., 1999, Influence of ligand substituents on polyethylenes generated by bis(imino)pyridyl iron catalysts., ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol: 218, Pages: U762-U762, ISSN: 0065-7727
Britovsek GJP, Gibson VC, Wass DF, 1999, The search for new-generation olefin polymerization catalysts: Life beyond metallocenes, Angewandte Chemie - International Edition, Vol: 38, Pages: 428-447, ISSN: 1433-7851
The introduction of well-defined, single-site organotransition metal olefin polymerization catalysts in the early 1980s highlighted the possibilities for controlling and dramatically improving the properties of commodity polymer products such as polyethylene and polypropylene. Group 4 metallocenes and half-sandwich titanium-amide complexes (constrained-geometry catalysts) have been at the forefront of these developments, and, as we approach the late 1990s, these catalysts are increasingly finding their way into commercial operations. However, it is generally acknowledged that no single class of catalyst will be capable of controlling all of the macromolecular parameters relevant to a wide and varied range of polyolefinic products. Over the past few years, an intense search has therefore developed, in both academic and industrial research laboratories, for new-generation catalysts. Some of the most significant recent developments have occurred with late transition metal systems. Particularly, the discovery of exceptionally active catalysts based on iron, a metal that had no previous track record of being applied in this way, has signposted the way for further technologically significant advances in the field. In this review, we highlight the key advances that have occurred in the discovery and development of non-Group 4 metallocene catalysts, amply demonstrating that there are significant signs of life beyond the Group 4 metallocenes. © Wiley-VCH Verlag GmbH, 1999.
Britovsek GJP, Bruce M, Gibson VC, et al., 1999, Iron and cobalt ethylene polymerization catalysts bearing 2,6- bis(imino)pyridyl ligands: Synthesis, structures, and polymerization studies, Journal of the American Chemical Society, Vol: 121, Pages: 8728-8740, ISSN: 0002-7863
Griffiths EAH, Britovsek GJP, Gibson VC, et al., 1999, Highly active ethylene polymerisation catalysts based on iron: an ab initio study, Chemical Communications, Pages: 1333-1334, ISSN: 1359-7345
Griffiths EAH, Britovsek GJP, Gibson VC, et al., 1999, Highly active ethylene polymerisation catalysts based on iron: an ab initio study, Chemical Communications, Pages: 1333-1334, ISSN: 1359-7345
Britovsek GJP, Gibson VC, Wass DF, 1999, The search for new-generation olefin polymerization catalysts: Life beyond metallocenes, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Vol: 38, Pages: 428-447, ISSN: 1433-7851
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- Citations: 2093
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