---
_id: '63969'
abstract:
- lang: eng
  text: 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 6mT and the H-1 nuclear magnetic resonancesignals were detected at 7T. We show
    that asymmetric NHC ligands, because of their favorable chemistry, can adapt the
    SABREactive complexes to different chemical scenarios.
author:
- first_name: S.
  full_name: Hadjiali, S.
  last_name: Hadjiali
- first_name: R.
  full_name: Savka, R.
  last_name: Savka
- first_name: M.
  full_name: Plaumann, M.
  last_name: Plaumann
- first_name: U.
  full_name: Bommerich, U.
  last_name: Bommerich
- first_name: S.
  full_name: Bothe, S.
  last_name: Bothe
- first_name: Torsten
  full_name: Gutmann, Torsten
  id: '118165'
  last_name: Gutmann
- first_name: T.
  full_name: Ratajczyk, T.
  last_name: Ratajczyk
- first_name: J.
  full_name: Bernarding, J.
  last_name: Bernarding
- first_name: H. H.
  full_name: Limbach, H. H.
  last_name: Limbach
- first_name: H.
  full_name: Plenio, H.
  last_name: Plenio
- first_name: G.
  full_name: Buntkowsky, G.
  last_name: Buntkowsky
citation:
  ama: Hadjiali S, Savka R, Plaumann M, et al. Substituent Influences on the NMR Signal
    Amplification of Ir Complexes with Heterocyclic Carbene Ligands. <i>Applied Magnetic
    Resonance</i>. 2019;50(7):895–902. doi:<a href="https://doi.org/10.1007/s00723-019-01115-x">10.1007/s00723-019-01115-x</a>
  apa: Hadjiali, S., Savka, R., Plaumann, M., Bommerich, U., Bothe, S., Gutmann, T.,
    Ratajczyk, T., Bernarding, J., Limbach, H. H., Plenio, H., &#38; Buntkowsky, G.
    (2019). Substituent Influences on the NMR Signal Amplification of Ir Complexes
    with Heterocyclic Carbene Ligands. <i>Applied Magnetic Resonance</i>, <i>50</i>(7),
    895–902. <a href="https://doi.org/10.1007/s00723-019-01115-x">https://doi.org/10.1007/s00723-019-01115-x</a>
  bibtex: '@article{Hadjiali_Savka_Plaumann_Bommerich_Bothe_Gutmann_Ratajczyk_Bernarding_Limbach_Plenio_et
    al._2019, title={Substituent Influences on the NMR Signal Amplification of Ir
    Complexes with Heterocyclic Carbene Ligands}, volume={50}, DOI={<a href="https://doi.org/10.1007/s00723-019-01115-x">10.1007/s00723-019-01115-x</a>},
    number={7}, journal={Applied Magnetic Resonance}, author={Hadjiali, S. and Savka,
    R. and Plaumann, M. and Bommerich, U. and Bothe, S. and Gutmann, Torsten and Ratajczyk,
    T. and Bernarding, J. and Limbach, H. H. and Plenio, H. and et al.}, year={2019},
    pages={895–902} }'
  chicago: 'Hadjiali, S., R. Savka, M. Plaumann, U. Bommerich, S. Bothe, Torsten Gutmann,
    T. Ratajczyk, et al. “Substituent Influences on the NMR Signal Amplification of
    Ir Complexes with Heterocyclic Carbene Ligands.” <i>Applied Magnetic Resonance</i>
    50, no. 7 (2019): 895–902. <a href="https://doi.org/10.1007/s00723-019-01115-x">https://doi.org/10.1007/s00723-019-01115-x</a>.'
  ieee: 'S. Hadjiali <i>et al.</i>, “Substituent Influences on the NMR Signal Amplification
    of Ir Complexes with Heterocyclic Carbene Ligands,” <i>Applied Magnetic Resonance</i>,
    vol. 50, no. 7, pp. 895–902, 2019, doi: <a href="https://doi.org/10.1007/s00723-019-01115-x">10.1007/s00723-019-01115-x</a>.'
  mla: Hadjiali, S., et al. “Substituent Influences on the NMR Signal Amplification
    of Ir Complexes with Heterocyclic Carbene Ligands.” <i>Applied Magnetic Resonance</i>,
    vol. 50, no. 7, 2019, pp. 895–902, doi:<a href="https://doi.org/10.1007/s00723-019-01115-x">10.1007/s00723-019-01115-x</a>.
  short: S. Hadjiali, R. Savka, M. Plaumann, U. Bommerich, S. Bothe, T. Gutmann, T.
    Ratajczyk, J. Bernarding, H.H. Limbach, H. Plenio, G. Buntkowsky, Applied Magnetic
    Resonance 50 (2019) 895–902.
date_created: 2026-02-07T15:40:18Z
date_updated: 2026-02-17T16:17:34Z
doi: 10.1007/s00723-019-01115-x
extern: '1'
intvolume: '        50'
issue: '7'
keyword:
- dynamic nuclear-polarization
- hyperpolarization
- enhancement
- hydrogen induced polarization
- olefin-metathesis catalysts
- parahydrogen-induced polarization
- peptides
- Physics
- sabre
- spectroscopy
language:
- iso: eng
page: 895–902
publication: Applied Magnetic Resonance
publication_identifier:
  issn:
  - 1613-7507
status: public
title: Substituent Influences on the NMR Signal Amplification of Ir Complexes with
  Heterocyclic Carbene Ligands
type: journal_article
user_id: '100715'
volume: 50
year: '2019'
...