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• Journal article
  Petersen AR, Taylor RA, Vicente-Hernandez I, Mallender PR, Olley H, White AJP, Britovsek GJPet al., 2014,

  Oxygen insertion into metal carbon bonds: formation of methylperoxo Pd(II) and Pt(II) complexes via photogenerated dinuclear intermediates

  , Journal of the American Chemical Society, Vol: 136, Pages: 14089-14099, ISSN: 1520-5126

  Platinum(II) and palladium(II) complexes [M(CH₃)(L)]SbF₆ with substituted terpyridine ligands L undergo light-driven oxygen insertion reactions into metal methyl bonds resulting in methylperoxo complexes [M(OOCH₃)(L)]SbF₆. The oxygen insertion reactions occur readily for complexes with methyl ligands that are activated due to steric interaction with substituents (NH₂, NHMe or CH₃) at the 6,6″-positions on the terpyridine ligand. All complexes exhibit attractive intermolecular π···π or M···M interactions in the solid state and in solution, which lead to excited triplet dinuclear M–M complexes upon irradiation. A mechanism is proposed whereby a dinuclear intermediate is generated upon irradiation that has a weakened M–C bond in the excited state, resulting in the observed oxygen insertion reactions.

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• Journal article
  Cecchini MP, Turek VA, Demetriadou A, Britovsek G, Welton T, Kornyshev AA, Wilton-Ely JDET, Edel JBet al., 2014,

  Heavy Metal Sensing Using Self-Assembled Nanoparticles at a Liquid–Liquid Interface

  , Advanced Optical Materials
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• Journal article
  Petersen AR, Taylor RA, Vicente-Hernandez I, Heinzer J, White AJP, Britovsek GJPet al., 2014,

  Light-Driven Methyl Exchange Reactions in Square-Planar Palladium(II) and Platinum(II) Complexes

  , ORGANOMETALLICS, Vol: 33, Pages: 1453-1461, ISSN: 0276-7333
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  • Citations: 10
• Journal article
  Grau M, Kyriacou A, Martinez FC, de Wispelaere IM, White AJP, Britovsek GJPet al., 2014,

  Unraveling the origins of catalyst degradation in non-heme iron-based alkane oxidation

  , DALTON TRANSACTIONS, Vol: 43, Pages: 17108-17119, ISSN: 1477-9226
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  • Citations: 45
• Journal article
  Grau M, Rigodanza F, White AJP, Soraru A, Carraro M, Bonchio M, Britovsek GJPet al., 2014,

  Ligand tuning of single-site manganese-based catalytic antioxidants with dual superoxide dismutase and catalase activity

  , CHEMICAL COMMUNICATIONS, Vol: 50, Pages: 4607-4609, ISSN: 1359-7345
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  • Citations: 31
• Journal article
  McGuinness DS, Chan B, Britovsek GJP, Yates BFet al., 2014,

  Ethylene Trimerisation with Cr-PNP Catalysts: A Theoretical Benchmarking Study and Assessment of Catalyst Oxidation State

  , AUSTRALIAN JOURNAL OF CHEMISTRY, Vol: 67, Pages: 1481-1490, ISSN: 0004-9425
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  • Citations: 28
• Journal article
  Grau M, England J, de Rosales RTM, Rzepa HS, White AJP, Britovsek GJPet al., 2013,

  Coordination Equilibria Between Seven- and Five-coordinate Iron(II) Complexes

  , INORGANIC CHEMISTRY, Vol: 52, Pages: 11867-11874, ISSN: 0020-1669
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  • Citations: 19
• Journal article
  Whiteoak CJ, Nobbs JD, Kiryushchenkov E, Pagano S, White AJP, Britovsek GJPet al., 2013,

  Tri(pyridylmethyl)phosphine: The Elusive Congener of TPA Shows Surprisingly Different Coordination Behavior

  , INORGANIC CHEMISTRY, Vol: 52, Pages: 7000-7009, ISSN: 0020-1669
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  • Citations: 26
• Journal article
  Coskun T, Conifer CM, Stevenson LC, Britovsek GJPet al., 2013,

  Carbodeoxygenation of Biomass: The Carbonylation of Glycerol and Higher Polyols to Monocarboxylic Acids

  , CHEMISTRY-A EUROPEAN JOURNAL, Vol: 19, Pages: 6840-6844, ISSN: 0947-6539
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  • Citations: 16
• Journal article
  Wong E, Jeck J, Grau M, White AJP, Britovsek GJPet al., 2013,

  A strong-field pentadentate ligand in iron-based alkane oxidation catalysis and implications for iron(IV) oxo intermediates

  , CATALYSIS SCIENCE & TECHNOLOGY, Vol: 3, Pages: 1116-1122, ISSN: 2044-4753
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  • Citations: 16
• Journal article
  Karpiniec SS, McGuinness DS, Britovsek GJP, Patel Jet al., 2012,

  Acetylene Cyclotrimerization with an Iron(II) Bis(imino)pyridine Catalyst

  , ORGANOMETALLICS, Vol: 31, Pages: 3439-3442, ISSN: 0276-7333
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  • Citations: 35
• Journal article
  Smit TM, Tomov AK, Britovsek GJP, Gibson VC, White AJP, Williams DJet al., 2012,

  The effect of imine-carbon substituents in bis(imino)pyridine-based ethylene polymerisation catalysts across the transition series.

  , Catal. Sci. Technol., Vol: 2, Pages: 643-655, ISSN: 2044-4753

  The synthesis, characterization and ethylene polymn. behavior of a series of first row transition metal complexes of the general formula LMXn (M = Fe, Co, Mn, n = 2, X = Cl; M = V, Cr, Ti, n = 3, X = Cl; M = Ni, n = 2, X = Br) with bis(imino)pyridine ligands L are reported, whereby the ligands contain heteroatom substituents DRm at the imine carbon (D = O, S, m = 1, R = Me, Ph, 2,6-Me2C6H3 or D = N, m = 2, R = Me, Ph). Only the O- and S-substituted complexes show catalytic activity for the polymn. of ethylene, upon activation with methylaluminoxane (MAO). The Mn- and Ni-based catalysts were found to be inactive under these conditions. The S-substituted complexes are generally more active than the O-substituted complexes and the catalytic activities increase with the size of the substituents. Iron-, vanadium- and chromium-based catalysts give highly active catalyst systems, which in some cases are more active than the well-known ketimine catalysts. All catalysts produce highly linear polyethylene with mol. wts. affected by M, D and R. O-substituted catalyst systems are generally less active and produce lower mol. wt. polyethylene compared to S-substituted systems. [on SciFinder(R)]

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• Journal article
  Nobbs JD, Tomov AK, Cariou R, Gibson VC, White AJP, Britovsek GJPet al., 2012,

  Thio-Pybox and Thio-Phebox complexes of chromium, iron, cobalt and nickel and their application in ethylene and butadiene polymerisation catalysis.

  , Dalton Trans., Vol: 41, Pages: 5949-5964, ISSN: 1477-9226

  Seven bis(thiazolinyl)- and bis(thiazolyl)pyridine Thio-Pybox ligands and their metal complexes of Cr(III), Fe(II), Co(II) and Ni(II) were prepd., as well as a Ni(II) complex contg. a monoanionic bis(thiazolinyl)phenyl Thio-Phebox ligand. These new metal complexes were characterized and used as catalysts, in combination with the co-catalyst MAO, for the polymn. of ethylene and for the polymn. of butadiene. In the case of ethylene polymn., the Thio-Pybox and Thio-Phebox metal complexes showed relatively low polymn. activities, much lower compared to the related bis(imino)pyridine complexes of the same metals. In the polymn. of butadiene, several Thio-Pybox Co(II) complexes show very high activities, significantly higher than the other metal complexes with the same ligand. It is the metal, rather than the ligand, that appears to have the most profound effect on the catalytic activity in butadiene polymn., unlike in the polymn. of ethylene, where bis(imino)pyridine ligands provide highly active catalysts for a range of 1st row transition metals. The mol. structures of one ligand and eight complexes were detd. by x-ray crystallog. [on SciFinder(R)]

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• Journal article
  Britovsek GJP, 2012,

  Homogeneous Catalysts Activity-Stability-Deactivation. By Piet W. N. M. van Leeuwen and John C. Chadwick.

  , Angew. Chem., Int. Ed., Vol: 51, ISSN: 1433-7851
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• Conference paper
  Elias S, Quinson J, Britovsek GJP, Kucernak ARJet al., 2011,

  Electrocatalytic CO₂ reduction using modified electrodes

  , 242nd National Meeting of the American-Chemical-Society (ACS), Publisher: AMER CHEMICAL SOC, ISSN: 0065-7727
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• Conference paper
  Britovsek G, Taylor R, Petersen A, 2011,

  Towards catalytic alkane oxidation via O₂ insertion into platinum methyl bonds

  , 242nd National Meeting of the American-Chemical-Society (ACS), Publisher: AMER CHEMICAL SOC, ISSN: 0065-7727
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• Journal article
  Conifer CM, Taylor RA, Law DJ, Sunley GJ, White AJP, Britovsek GJPet al., 2011,

  First metal complexes of 6,6'-dihydroxy-2,2'-bipyridine: from molecular wires to applications in carbonylation catalysis.

  , Dalton Trans, Vol: 40, Pages: 1031-1033

  The first square planar rhodium(I) complexes containing the 6,6'-dihydroxy-2,2'-bipyridine ligand have been prepared. The complexes form molecular wires in the solid state and are active catalysts for the carbonylation of methyl acetate.

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• Journal article
  Karpiniec SS, McGuinness DS, Britovsek GJP, Davies NW, Patel Jet al., 2011,

  Evaluation of mid-to-late transition metal imine catalysts for acetylene oligomerisation: A high activity bis(imino)pyridine iron(II) catalyst

  , Catalysis Today, Vol: 178, Pages: 64 - 71-64 - 71, ISSN: 0920-5861
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• Journal article
  Conifer CM, Law DJ, Sunley GJ, Haynes A, Wells JR, White AJP, Britovsek GJPet al., 2011,

  Dicarbonylrhodium(I) Complexes of Bipyridine Ligands with Proximate H-Bonding Substituents and Their Application in Methyl Acetate Carbonylation

  , European Journal of Inorganic Chemistry, Vol: 2011, Pages: 3511-3522, ISSN: 1099-0682
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• Journal article
  Conifer CM, Law DJ, Sunley GJ, White AJP, Britovsek GJPet al., 2011,

  Lewis Acids and Lewis Acid-Functionalized Ligands in Rhodium-Catalyzed Methyl Acetate Carbonylation

  , Organometallics, Vol: 30, Pages: 4060-4066-4060-4066
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• Journal article
  Karpiniec SS, McGuinness DS, Britovsek GJP, Wierenga TS, Patel Jet al., 2011,

  High activity acetylene polymerisation with a bis(imino) pyridine iron(II) catalyst

  , CHEMICAL COMMUNICATIONS, Vol: 47, Pages: 6945-6947, ISSN: 1359-7345
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  • Citations: 7
• Journal article
  Conifer CM, Taylor RA, Law DJ, Sunley GJ, White AJP, Britovsek GJPet al., 2011,

  First metal complexes of 6,6′-dihydroxy-2,2′-bipyridine: from molecular wires to applications in carbonylation catalysis

  , DALTON TRANSACTIONS, Vol: 40, Pages: 1031-1033, ISSN: 1477-9226
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  • Citations: 30
• Conference paper
  Tomov AK, Nobbs JD, Britovsek GJ, Gibson VCet al., 2011,

  Alternating α-olefin distributions in chromium-catalysed ethylene oligomerisation.

  , Publisher: American Chemical Society, Pages: INOR-529

  The last two decades have witnessed tremendous advances in catalyst development for the selective oligomerisation of ethylene.1 The Cossee-type chain growth mechanism results, in the absence of chain termination reactions, in a Poisson distribution of products (e.g. Alfen process). A combination of chain propagation and chain termination, for example β-H transfer, results in a Schulz-Flory distribution of α-olefins, (e.g. Shell Higher Olefin Process). An alternative chain growth mechanism based on the formation of metallacycles has enabled the selective trimerisation and tetramerisation of ethylene or the formation of higher oligomers. We have previously communicated an exceptionally active chromium-based catalyst supported by a tridentate bis(benzimidazolyl)amine ligand that affords a previously unobserved alternating α-olefin distribution, as shown below.2 Further studies on this remarkable catalyst system as well as mechanistic implications for olefin polymn. catalysis will be presented. Refernces 1)McGuinness, D. Rev., 2011, 111 ,2321. 2)Tomov, A.K.; Chirinos, J.J.; Long, R.; Gibson, V.C.; Elsegood. 2006, 128, 7704. [on SciFinder(R)]

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• Journal article
  Whiteoak CJ, Torres Martin de Rosales R, White AJP, Britovsek GJPet al., 2010,

  Iron(II) complexes with tetradentate bis(aminophenolate) ligands: synthesis and characterization, solution behavior, and reactivity with O(2).

  , Inorg Chem, Vol: 49, Pages: 11106-11117

  Tetradentate bis(aminophenolate) ligands H(2)salan(X) and H(2)bapen(X) (where X refers to the para-phenolate substituent = H, Me, F, Cl) react with [Fe{N(SiMe(3))(2)}(2)] to form iron(II) complexes, which in the presence of suitable donor ligands L (L = pyridine or THF) can be isolated as the complexes [Fe(salan(X))(L)(2)] and [Fe(bapen(X))(L)(2)]. In the absence of donor ligands, either mononuclear complexes, for example, [Fe(salan(tBu,tBu))], or dinuclear complexes of the type [Fe(salan(X))](2) are obtained. The dynamic coordination behavior in solution of the complexes [Fe(salan(F))(L)(2)] and [Fe(bapen(F))(L)(2)] has been investigated by VT (1)H and (19)F NMR spectroscopy, which has revealed equilibria between isomers with different ligand coordination topologies cis-α, cis-β and trans. Exposure of the iron(II) salan(X) complexes to O(2) results in the formation of oxo-bridged iron(III) complexes of the type [{Fe(salan(X))}(2)(μ-O)] or [{Fe(salan(X))(L)}(2)(μ-O)]. The lack of catalytic activity of the iron(II) salan and bapen complexes in the oxidation of cyclohexane with H(2)O(2) as the oxidant is attributed to the rapid formation of stable and catalytically inactive oxo-bridged iron(III) complexes.

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• Journal article
  Whiteoak CJ, de Rosales RTM, White AJP, Britovsek GJPet al., 2010,

  Iron(II) Complexes with Tetradentate Bis(aminophenolate) Ligands: Synthesis and Characterization, Solution Behavior, and Reactivity with O₂

  , INORGANIC CHEMISTRY, Vol: 49, Pages: 11106-11117, ISSN: 0020-1669
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  • Citations: 34
• Journal article
  Cariou R, Chirinos JJ, Gibson VC, Jacobsen G, Tomov AK, Britovsek GJP, White AJPet al., 2010,

  The effect of the central donor in bis(benzimidazole)-based cobalt catalysts for the selective cis-1,4-polymerization of butadiene.

  , Dalton Trans., Vol: 39, Pages: 9039-9045, ISSN: 1477-9226

  A series of bis(benzimidazole)-based cobalt(ii) dichloride complexes contg. a range of different central donors has been synthesized and characterized. The nature of the central donor affects the binding of the ligand to the cobalt center and dets. the coordination geometry of the metal complexes. All complexes have been shown to catalyze the polymn. of butadiene, in combination with MAO as the co-catalyst, to give cis-1,4-polybutadiene with high selectivity. The nature of the central donor has a marked influence on the polymn. activity of the catalysts, but does not affect the polymer microstructure. The addn. of PPh3 generally increases the polymn. activity of these cobalt catalysts and results in predominantly (60-70%) 1,2-vinyl-polybutadiene. [on SciFinder(R)]

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• Journal article
  Lyakin OY, Bryliakov KP, Britovsek GJP, Talsi EPet al., 2009,

  EPR Spectroscopic Trapping of the Active Species of Nonheme Iron-Catalyzed Oxidation

  , JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 131, Pages: 10798-+, ISSN: 0002-7863
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  • Citations: 127
• Journal article
  Tomov AK, Gibson VC, Britovsek GJP, Long RJ, van Meurs M, Jones DJ, Tellmann KP, Chirinos JJet al., 2009,

  Distinguishing Chain Growth Mechanisms in Metal-catalyzed Olefin Oligomerization and Polymerization Systems: C2H4/C2D4 Co-oligomerization/Polymerization Experiments Using Chromium, Iron, and Cobalt Catalysts.

  , Organometallics, Vol: 28, Pages: 7033-7040, ISSN: 0276-7333

  A series of co-oligomerization and copolymn. reactions of C2H4/C2D4 (1:1) mixts. have been carried out using various transition metal catalysts based on Cr, Co, and Fe in combination with MAO. The oligomeric α-olefin products have been analyzed by GC and GC/MS, and the exptl. results have been compared with the theor. mass spectra derived from math. models. Solid polymer samples have been analyzed by 13C{1H} and 13C DEPT-135 NMR spectroscopy. C2H4/C2D4 co-oligomerization can be used as a method to differentiate between a metallacyclic or a Cossee-type chain growth mechanism in oligomerization systems. In the case of a metallacyclic mechanism, no H/D scrambling is obsd., whereas for a Cossee-type mechanism, similar rates of chain propagation and chain termination (β-H elimination) result in rapid H/D scrambling of the C2H4/C2D4 feed. This method is therefore limited to oligomerization systems and cannot be applied in polymn. systems, where the rate of chain propagation is much faster than the rate of chain termination. [on SciFinder(R)]

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  Taylor RA, Law DJ, Sunley GJ, White AJP, Britovsek GJPet al., 2009,

  Towards Photocatalytic Alkane Oxidation: The Insertion of Dioxygen into a Platinum (II)-Methyl Bond

  , ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Vol: 48, Pages: 5900-5903, ISSN: 1433-7851
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  • Citations: 59
• Journal article
  Taylor RA, Law DJ, Sunley GJ, White AJP, Britovsek GJPet al., 2009,

  Towards photocatalytic alkane oxidation: the insertion of dioxygen into a platinum(II)-methyl bond.

  , Angew Chem Int Ed Engl, Vol: 48, Pages: 5900-5903
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