Research output: Contribution to journal › Article › peer-review
Mechanistic Insight into Novel Sulfoxide Containing SABRE Polarisation Transfer Catalysts. / Tickner, Benjamin James; Lewis, Jennifer Sunari; John, Richard Owain; Whitwood, Adrian C.; Duckett, Simon.
In: Dalton Transactions, 24.09.2019.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Mechanistic Insight into Novel Sulfoxide Containing SABRE Polarisation Transfer Catalysts
AU - Tickner, Benjamin James
AU - Lewis, Jennifer Sunari
AU - John, Richard Owain
AU - Whitwood, Adrian C.
AU - Duckett, Simon
N1 - © The Royal Society of Chemistry 2019
PY - 2019/9/24
Y1 - 2019/9/24
N2 - Signal Amplification By Reversible Exchange (SABRE) is a hyperpolarisation technique that commonly uses [Ir(H)2(carbene)(substrate)3]Cl complexes to catalytically transfer magnetisation from para-hydrogen derived hydride ligands to coordinated substrates. Here, we explore the reactivity of a novel class of such catalysts based on sulfoxide containing [IrCl(H)2(carbene)(DMSO)2], which are involved in the hyperpolarisation of pyruvate using SABRE. We probe the reactivity of this species by NMR and DFT and upon reaction with sodium pyruvate establish the formation of two isomers of [Ir(H)2(η2-pyruvate)(DMSO)(IMes)]. Studies with related disodium oxalate yield [Ir2(H)4(IMes)2(DMSO)2(κ2-η2-Oxalate)] that is characterised by NMR and X-ray diffraction.
AB - Signal Amplification By Reversible Exchange (SABRE) is a hyperpolarisation technique that commonly uses [Ir(H)2(carbene)(substrate)3]Cl complexes to catalytically transfer magnetisation from para-hydrogen derived hydride ligands to coordinated substrates. Here, we explore the reactivity of a novel class of such catalysts based on sulfoxide containing [IrCl(H)2(carbene)(DMSO)2], which are involved in the hyperpolarisation of pyruvate using SABRE. We probe the reactivity of this species by NMR and DFT and upon reaction with sodium pyruvate establish the formation of two isomers of [Ir(H)2(η2-pyruvate)(DMSO)(IMes)]. Studies with related disodium oxalate yield [Ir2(H)4(IMes)2(DMSO)2(κ2-η2-Oxalate)] that is characterised by NMR and X-ray diffraction.
U2 - 10.1039/c9dt02951f
DO - 10.1039/c9dt02951f
M3 - Article
JO - Dalton Transactions
JF - Dalton Transactions
SN - 1477-9234
ER -