Chemical Communications · 2013 · 100 citations · 18 references
Natural SciencesChemical EngineeringChemistryCatalysisOrganic ChemistryOrganometallic ChemistryCarbene ComplexesCatalyst CharacterizationCatalytic MaterialsCoordination ChemistryLigand BindingMetal-ligand BondingCarbene Coordination ChemistryLigand Electronic EffectsLigand Steric EffectsPolarization Transfer MechanismsSignal Amplification By Reversible ExchangeSignal Amplification MechanismsSignal EnhancementSteric Effects In Carbene Ligands
SABRE hyperpolarizes substrates by polarization transfer from para-hydrogen in a metal complex. We have measured the signal enhancement of pyridine and its exchange rate in various [Ir(NHC)(Py)3(H)2](+) complexes to gain insight into their dependence on the N-Heterocyclic Carbene (NHC) ligand's steric and electronic properties.
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Reversible Interactions with para-Hydrogen Enhance NMR Sensitivity by Polarization Transfer
Ralph W. Adams, Juan A. Aguilar, Kevin D. Atkinson et al. · Science · 2009 · 1K citations · Full text
Natural Sciences, Chemistry, Physics +16