Utilisation of water soluble iridium catalysts for signal amplification by reversible exchange. - Institut de Chimie de Clermont-Ferrand Accéder directement au contenu
Article Dans Une Revue Dalton Transactions Année : 2015

Utilisation of water soluble iridium catalysts for signal amplification by reversible exchange.

Résumé

The catalytic hyperpolarisation of pyridine, 3-hydroxypyridine and oxazole by the Signal Amplification By Reversible Exchange (SABRE) process is achieved by a series of water soluble iridium phosphine and N-heterocyclic carbene dihydride complexes. While the efficiency of the SABRE process in methanol-d4 solution or ethanol-d6 solution is high, with over 400-fold 1H polarisation of pyridine being produced by [Ir(H)2(NCMe)(py)(IMes)(monosulfonated-triphenylphosphine)]BF4, changing to a D2O or a D2O–ethanol solvent mixture leads to dramatically reduced activity which is rationalised in terms of low H2 solubility.

Domaines

Chimie
Fichier non déposé

Dates et versions

hal-01207900 , version 1 (01-10-2015)

Identifiants

Citer

M. Fekete, C. Gibard, G. J. Dear, G. G. R. Green, A. J. J. Hooper, et al.. Utilisation of water soluble iridium catalysts for signal amplification by reversible exchange.. Dalton Transactions, 2015, 44, pp.7870-7880. ⟨10.1039/C5DT00311C⟩. ⟨hal-01207900⟩
25 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More