Substituent Influences on the NMR Signal Amplification of Ir Complexes with Heterocyclic Carbene Ligands
| Autor: | Gerd Buntkowsky, Sarah Bothe, Roman Savka, Johannes Bernarding, Herbert Plenio, Torsten Gutmann, Tomasz Ratajczyk, Markus Plaumann, Ute Bommerich, Hans-Heinrich Limbach, Sara Hadjiali |
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| Rok vydání: | 2019 |
| Předmět: |
Chemical substance
Chemistry Substituent 010402 general chemistry 01 natural sciences Atomic and Molecular Physics and Optics 030218 nuclear medicine & medical imaging 0104 chemical sciences Solvent 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Pyridine Polymer chemistry Hyperpolarization (physics) Signal amplification Carbene |
| Zdroj: | Applied Magnetic Resonance. 50:895-902 |
| ISSN: | 1613-7507 0937-9347 |
| Popis: | A number of Ir–N-heterocyclic carbene (Ir–NHC) complexes with asymmetric N-heterocyclic carbene (NHC) ligands have been prepared and examined for signal amplification by reversible exchange (SABRE). Pyridine was chosen as model compound for hyperpolarization experiments. This substrate was examined in a solvent mixture using several Ir–NHC complexes, which differ in their NHC ligands. The SABRE polarization was created at 6 mT and the 1H nuclear magnetic resonance signals were detected at 7 T. We show that asymmetric NHC ligands, because of their favorable chemistry, can adapt the SABRE active complexes to different chemical scenarios. |
| Databáze: | OpenAIRE |
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