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Start Over Author "Simon J. Lancaster" Journal chemical communications
7 results on '"Simon J. Lancaster"'

1. Mononuclear TiN complexes formed by the facile multiple deprotonation of H3N·B(C6F5)3: the importance of chloride ligands

Author

Simon J. Lancaster, William Clegg, David L. Hughes, Anna-Marie Fuller, and Ross W. Harrington

Subjects
Stereochemistry, Ligand, Metals and Alloys, Nitridoborate, General Chemistry, Chloride, Medicinal chemistry, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Ion, chemistry.chemical_compound, Deprotonation, chemistry, Materials Chemistry, Ceramics and Composites, medicine, medicine.drug
Abstract

The crystalline ion-pair [TiCl(NMe2)2(NMe2H)2]+[TiCl2{NB(C6F5)3}(NMe2H)2]−, in which the anion has a triply bonded nitridoborate ligand, is formed through the multiple activation of H3N·B(C6F5)3 when treated with [Ti(NMe2)3Cl].

Published
2008
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2. New weakly coordinating counter anions for high activity polymerisation catalysts: [(C6F5)3B–CN–B(C6F5)3]− and [Ni{CNB(C6F5)3}4]2−

Author

Mark Thornton-Pett, Dennis A. Walker, Manfred Bochmann, and Simon J. Lancaster

Subjects
Stereochemistry, Metals and Alloys, chemistry.chemical_element, General Chemistry, Medicinal chemistry, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, chemistry, Polymerization, Materials Chemistry, Ceramics and Composites, High activity, Boron, Metallocene
Abstract

The new borate [CPh3]+[CN{B(C6F5)3}2]– and the anionic isocyanoborate complex [Ni{CNB(C6F5)3}4]2– are readily accessible in one-pot reactions and act as a highly efficient activators for metallocene polymerisation catalysts; turnover numbers of up to 53 000 s–1 appear to be the highest reported so far for ethene polymerisation catalysts.

Published
1999
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3. Hybrid catalysts: the synthesis, structure and ethene polymerisation activity of (salicylaldiminato)(pyrrolylaldiminato) titanium complexes

Author

Michael B. Hursthouse, Manfred Bochmann, Simon J. Coles, Simon J. Lancaster, and David A. Pennington

Subjects
Chemistry, Ligand, Metals and Alloys, chemistry.chemical_element, General Chemistry, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Octahedron, Polymerization, Polymer chemistry, Materials Chemistry, Ceramics and Composites, Organic chemistry, Titanium
Abstract

The mono(salicylaldiminato) complexes Ti{3-tBu-2-(O)C6H3CHN(R)}Cl3(THF) (where R = C6H5, C6F5) react with the metallated pyrrolylaldiminato ligand, K[2-(C6H5NCH)C4H3N], to afford the first examples of hybrid salicylaldiminato-ligated octahedral titanium complexes; the pre-catalysts give from very high to extremely high ethene polymerisation productivities when activated with MAO.

Published
2005
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4. The hafnium-mediated NH activation of an amido-boraneElectronic supplementary information (ESI) available: Compounds 1–4, ORTEP figures for 1and 2, a table of hydrogen bonds for 3, a 1H NMR spectrum of the crude reaction mixture for 4, synthetic details for compounds 1, 2and 3. CCDC 814619–814622. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c1cc11320h

Author

Elizabeth A. Jacobs, Anna-Marie Fuller, Simon J. Lancaster, and Joseph A. Wright

Subjects
HAFNIUM, BORANES, TOLUENE, SOLUTION (Chemistry), AMMONIA, LITHIUM compounds, CRYSTALLOGRAPHY
Abstract

Treatment of Cp2HfCl2with two equivalents of LiNH2BH(C6F5)2in toluene solution yields Cp2Hf{NHBH(C6F5)2}, which has been crystallographically characterised. The otherwise base-free [NHBH(C6F5)2] complex is stabilised by an agostic interaction. [ABSTRACT FROM AUTHOR]

Published
2011
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5. Mononuclear TiN complexes formed by the facile multiple deprotonation of H3N·B(C6F5)3: the importance of chloride ligandsElectronic supplementary information (ESI) available: ORTEP view of 3. CCDC 696254. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/b812785a

Author

Anna-Marie Fuller, William Clegg, Ross W. Harrington, David L. Hughes, and Simon J. Lancaster

Subjects
TITANIUM nitride, METAL complexes, PROTON transfer reactions, LIGANDS (Chemistry), CRYSTALLOGRAPHY, ELECTRONIC information resources
Abstract

The crystalline ion-pair [TiCl(NMe2)2(NMe2H)2]+[TiCl2{NB(C6F5)3}(NMe2H)2]−, in which the anion has a triply bonded nitridoborate ligand, is formed through the multiple activation of H3N·B(C6F5)3when treated with [Ti(NMe2)3Cl]. [ABSTRACT FROM AUTHOR]

Published
2008
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