Výsledky vyhledávání - "Iman G. Khazal"

Computational Discovery of Stable Transition-Metal Vinylidene Complexes

Autor: Adrian C. Whitwood, Benjamin W. Rawe, Elizabeth J. Smith, Iman G. Khazal, Jason M. Lynam, Natalie Fey, Keshan Bolaky, Oliver J. S. Pickup, Timothy C. King

Publikováno v: Organometallics. 33:1751-1761

Experimental results have long suggested that catalyst optimization is an inherently multivariate process, requiring the screening of reaction conditions (temperature, pressure, solvents, precursors, etc.), catalyst structure (metal and ligands), and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f6018d259dfd1a2fb94551b4750406db
https://doi.org/10.1021/om500114u

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Hyperpolarisation through reversible interactions with parahydrogen

Autor: Andrew D. Roberts, Richard J. Lewis, Michael J. Burns, Alexander J. J. Hooper, Steven R. Coombes, Michael J. Cowley, Gordon J. Dear, Louise A. R. Highton, Lyrelle S. Lloyd, Amy J. Ruddlesden, Majid Ali Khan, Ryan E. Mewis, Georgi R. Genov, Aziz Asghar, Simon B. Duckett, Iman G. Khazal, Gary G. R. Green, Adrian J. Charlton

Publikováno v: Catal. Sci. Technol.. 4:3544-3554

We describe here how the complexes Ir(COD)(NHC)Cl [NHC = IMes, SIMes, IPr, SIPr, ICy, IMe and ImMe2NPri2] provide significant insight into the catalytic process that underpins the hyperpolarization method signal amplification by reversible exchange (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3993d9434ac0dad6bb1da714f8c85b08
https://doi.org/10.1039/c4cy00464g

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Reversible Interactions with para-Hydrogen Enhance NMR Sensitivity by Polarization Transfer

Autor: David C. Williamson, Michael J. Cowley, Iman G. Khazal, Paul I. P. Elliott, Juan A. Aguilar, Joaquín López-Serrano, Ralph W. Adams, Gary G. R. Green, Kevin D. Atkinson, Simon B. Duckett

Publikováno v: Adams, R W, Aguilar, J A, Atkinson, K D, Cowley, M J, Elliott, P I P, Duckett, S B, Green, G G R, Khazal, I G, Lopez-serrano, J & Williamson, D C 2009, ' Reversible interactions with para-hydrogen enhance NMR sensitivity by polarization transfer ', Science, vol. 323, no. 5922, pp. 1708-1711 . https://doi.org/10.1126/science.1168877

The sensitivity of both nuclear magnetic resonance spectroscopy and magnetic resonance imaging is very low because the detected signal strength depends on the small population difference between spin states even in high magnetic fields. Hyperpolariza

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f345a383555cb085b42bbefc37b70f7
https://doi.org/10.1126/science.1168877

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Para-Hydrogen Induced Polarization without Incorporation of Para-Hydrogen into the Analyte

Autor: Kevin D. Atkinson, Gary G. R. Green, Iman G. Khazal, Joaquín López-Serrano, Adrian C. Whitwood, Michael J. Cowley, Paul I. P. Elliott, Simon B. Duckett

Publikováno v: Inorganic Chemistry. 48:663-670

The cationic iridium complexes [Ir(COD)(PR3)2]BF4 (1a-c) (a, R = Ph; b, R = p-tolyl; c, R = p-C6H4-OMe) react with parahydrogen in the presence of pyridine to give trans, cis, cis-[Ir(PR3)2(py)2(H)2]+ (2a-c) and small amounts of fac, cis-[Ir(PR3)(py)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd7f0ccc384dd95931f8a0662f537e14
https://doi.org/10.1021/ic8020029

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Platinum Bis(tricyclohexylphosphine) Silyl Hydride Complexes

Autor: Danny Chan, Robin N. Perutz, Sarah L. Heath, Iman G. Khazal, Sylviane Sabo-Etienne, Phillipa L. Timmins, Simon B. Duckett

Publikováno v: Organometallics. 23:5744-5756

A series of platinum metal silyl hydride complexes, cis-Pt(PCy3)2(H)(SiR2R‘) (SiR2R‘ = SiPh2H, SiEt2H, SiPh3, SiEt3, SiMe2(OSiHMe2), Si(OSiMe3)2Me, SiMe2(CH2CHCH2), SiMe2Et, SiMe2[OCH2C(Me)CH2], Si(OMe)2(CH2CHCH2), SiPh2(OSiPh2H)), have been prep

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d8bd0de944ccc041f7987f93e191c6f3
https://doi.org/10.1021/om049549n

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A parahydrogen based NMR study of Pt catalysed alkyne hydrogenation

Autor: John P. Dunne, A. Jonathan Holmes, José M. Hernández, Iman G. Khazal, Cyril Godard, Simon B. Duckett, Marie Boutain, Joaquín López-Serrano

Publikováno v: Dalton transactions (Cambridge, England : 2003). 39(14)

A parahydrogen based NMR study of the platinum(II) bis-phosphine triflate catalysed hydrogenation of alkynes in methanol reveals that platinum bis-phosphine alkyl cations and methanol functionalised platinum bis-phosphine alkylether cations, are resp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09ea9d0169f10e065acced3ed1eeb19d
https://pubmed.ncbi.nlm.nih.gov/20333338

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Detection of platinum dihydride bisphosphine complexes and studies of their reactivity through para-hydrogen-enhanced NMR methods

Autor: Simon B. Duckett, Marta Roselló-Merino, Cyril Godard, Iman G. Khazal, María-Dolores Gálvez-López, Joaquín López-Serrano, Adrian C. Whitwood, Agustí Lledós

Publikováno v: Magnetic resonance in chemistry : MRC. 46

In-situ NMR studies on the reactions of Pt{CH2 = CHSi(Me)2}2O)(PCy3) with phosphines, HSiEt3 and - hydrogen or Pt(L)(L′)(Me)2 alone enable the detection of cis-Pt(L)(L′)(H)2 [L = PCy3 and L′ = PCy2H, PPh3 or PCy3] which then undergo hydride sit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0be1bc25c67556486e59a58b03531ae9
https://pubmed.ncbi.nlm.nih.gov/18855330

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