| |  Online-Ressource |
|---|
| Verfasst von: | Ott, Jonas C. [VerfasserIn]  |
|---|
| | Suturina, Elizaveta A. [VerfasserIn] |
|---|
| | Kuprov, Ilya [VerfasserIn] |
|---|
| | Nehrkorn, Joscha [VerfasserIn] |
|---|
| | Schnegg, Alexander [VerfasserIn] |
|---|
| | Enders, Markus [VerfasserIn] |
|---|
| | Gade, Lutz H. [VerfasserIn] |
|---|
| Titel: | Observability of paramagnetic NMR signals at over 10 000 ppm chemical shifts |
|---|
| Titelzusatz: | dedicated to Prof. Frank H. Köhler on the occasion of his 80th birthday |
|---|
| Gefeierte Person: | Köhler, Frank H. [GefeierteR] |
|---|
| Verf.angabe: | Jonas C. Ott, Elizaveta A. Suturina, Ilya Kuprov, Joscha Nehrkorn, Alexander Schnegg, Markus Enders, and Lutz H. Gade |
|---|
| Jahr: | 2021 |
|---|
| Umfang: | 9 S. |
|---|
| Fussnoten: | First published: 05 August 2021 ; Gesehen am 25.11.2022 |
|---|
| Titel Quelle: | Enthalten in: Angewandte Chemie. International edition |
|---|
| Ort Quelle: | Weinheim : Wiley-VCH, 1998 |
|---|
| Jahr Quelle: | 2021 |
|---|
| Band/Heft Quelle: | 60(2021), 42, Seite 22856-22864 |
|---|
| ISSN Quelle: | 1521-3773 |
|---|
| Abstract: | We report an experimental observation of 31P NMR resonances shifted by over 10 000 ppm (meaning percent range, and a new record for solutions), and similar 1H chemical shifts, in an intermediate-spin square planar ferrous complex [tBu(PNP)Fe-H], where PNP is a carbazole-based pincer ligand. Using a combination of electronic structure theory, nuclear magnetic resonance, magnetometry, and terahertz electron paramagnetic resonance, the influence of magnetic anisotropy and zero-field splitting on the paramagnetic shift and relaxation enhancement is investigated. Detailed spin dynamics simulations indicate that, even with relatively slow electron spin relaxation (T1 ≈10−11 s), it remains possible to observe NMR signals of directly metal-bonded atoms because pronounced rhombicity in the electron zero-field splitting reduces nuclear paramagnetic relaxation enhancement. |
|---|
| DOI: | doi:10.1002/anie.202107944 |
|---|
| URL: | kostenfrei: Volltext: https://doi.org/10.1002/anie.202107944 |
|---|
| | kostenfrei: Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.202107944 |
|---|
| | DOI: https://doi.org/10.1002/anie.202107944 |
|---|
| Datenträger: | Online-Ressource |
|---|
| Dokumenttyp: | Festschrift |
|---|
| Sprache: | eng |
|---|
| Sach-SW: | iron |
|---|
| | paramagnetic NMR |
|---|
| | relaxation |
|---|
| | THz-EPR |
|---|
| | zero-field splitting |
|---|
| K10plus-PPN: | 1823669670 |
|---|
| Verknüpfungen: | → Zeitschrift |
|---|
| |
|
|---|
| | |
|---|
| Lokale URL UB: |  Zum Volltext |
|---|
Observability of paramagnetic NMR signals at over 10 000 ppm chemical shifts / Ott, Jonas C. [VerfasserIn]; 2021 (Online-Ressource)
