Iridium(III) Hydrido N‑Heterocyclic Carbene–Phosphine Complexes as Catalysts in Magnetization Transfer Reactions

• Published in: Inorganic chemistry Vol. 52; no. 23; pp. 13453 - 13461
• Main Authors: Fekete, Marianna, Bayfield, Oliver, Duckett, Simon B, Hart, Sam, Mewis, Ryan E, Pridmore, Natalie, Rayner, Peter J, Whitwood, Adrian
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 02.12.2013
• Subjects: Catalysis; Coordination Complexes - chemistry; Iridium - chemistry; Magnetic Phenomena; Magnetic Resonance Spectroscopy; Methane - analogs & derivatives; Methane - chemistry; Models, Molecular; Phosphines - chemistry

The hyperpolarization (HP) method signal amplification by reversible exchange (SABRE) uses para-hydrogen to sensitize substrate detection by NMR. The catalyst systems [Ir­(H)2(IMes)­(MeCN)2(R)]­BF4 and [Ir­(H)2(IMes)­(py)2(R)]­BF4 [py = pyridine; R = PCy3 or PPh3; IMes = 1,3-bis­(2,4,6-trimethylphen...