Ligand effects of NHC-iridium catalysts for signal amplification by reversible exchange (SABRE)

Chem Commun (Camb). 2013 Aug 28;49(67):7388-90. doi: 10.1039/c3cc43423k.

Abstract

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Catalysis
  • Coordination Complexes / chemistry*
  • Hydrogen / chemistry
  • Iridium / chemistry*
  • Ligands
  • Methane / analogs & derivatives*
  • Methane / chemistry
  • Pyridines / chemistry*

Substances

  • Coordination Complexes
  • Ligands
  • Pyridines
  • carbene
  • Iridium
  • Hydrogen
  • pyridine
  • Methane