Application of the π-accepting ability parameter of N-heterocyclic carbene ligands in iridium complexes for signal amplification by reversible exchange (SABRE)

The new π-accepting ability parameter (PAAP) appears to be the best tool to analyse the electronic properties of NHC ligands in [Ir(H)2(NHC)(Py)3](+) complexes for SABRE. Together with the buried volume, the efficiency of hyperpolarisation transfer in SABRE, depending on the exchange rate of pyridin...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2015-09, Vol.44 (35), p.15387-15390
Main Authors: van Weerdenburg, Bram J A, Eshuis, Nan, Tessari, Marco, Rutjes, Floris P J T, Feiters, Martin C
Format: Article
Language:English
Subjects:
Amplification
Carbenes
Coordination Complexes - chemistry
Coordination compounds
Electrons
Exchange
Heterocyclic Compounds - chemistry
Iridium
Iridium - chemistry
Ligands
Methane - analogs & derivatives
Methane - chemistry
Models, Molecular
Pyridines
Pyridines - chemistry
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Summary:The new π-accepting ability parameter (PAAP) appears to be the best tool to analyse the electronic properties of NHC ligands in [Ir(H)2(NHC)(Py)3](+) complexes for SABRE. Together with the buried volume, the efficiency of hyperpolarisation transfer in SABRE, depending on the exchange rate of pyridine, can be described.
ISSN:1477-9226
1477-9234
DOI:10.1039/c5dt02340h