Highly active iron catalysts for olefin hydrogenation enable para-hydrogen induced hyperpolarisation of 1H and 19F NMR resonances at 1.4 Tesla

Julianna S. Doll; Jan Kergassner; Bingyu Zhang; Christina M. Thiele; Gerd Buntkowsky; Markus Enders; Torsten Gutmann; Dragoş-Adrian Roşca

doi:10.1039/D5CC02409A

Highly active iron catalysts for olefin hydrogenation enable para-hydrogen induced hyperpolarisation of ¹H and ¹⁹F NMR resonances at 1.4 Tesla†

Julianna S. Doll,‡^a Jan Kergassner,‡^b Bingyu Zhang,^b Christina M. Thiele,

^c Gerd Buntkowsky,

^b Markus Enders,

^a Torsten Gutmann

*^b and Dragoş-Adrian Roşca

*^ad

Author affiliations

* Corresponding authors

^a Anorganisch-Chemisches Institut, Im Neuenheimer Feld 276, Universität Heidelberg, D-69120 Heidelberg, Germany
E-mail: dragos.rosca@uni-heidelberg.de, dragos-adrian.rosca@univ-rennes.fr

^b Technische Universität Darmstadt, Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Peter-Grünberg-Straße 8, D-64287 Darmstadt, Germany
E-mail: gutmann@chemie.tu-darmstadt.de

^c Technische Universität Darmstadt, Clemens-Schöpf-Institut für Organische Chemie und Biochemie, Peter-Grünberg-Straße 16, D-64287 Darmstadt, Germany

^d Institut des Sciences Chimiques de Rennes, Université de Rennes, F-35000, Rennes, France

Abstract

para-Hydrogen induced polarisation (PHIP) is an excellent tool for extracting mechanistic information in catalysis since it circumvents the intrinsic low sensitivity of nuclear magnetic resonance (NMR) spectroscopy. We report a class of iron complexes that are highly active in olefin hydrogenation catalysis and act as PHIP catalysts at 1.4 Tesla. Moreover, hyperpolarisation transfer to ¹⁹F is observed.

This article is part of the themed collection: 2025 Pioneering Investigators

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DOI: https://doi.org/10.1039/D5CC02409A
Article type: Communication
Submitted: 01 maí 2025
Accepted: 18 jún. 2025
First published: 18 jún. 2025
This article is Open Access

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Chem. Commun., 2025, Advance Article

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Highly active iron catalysts for olefin hydrogenation enable para-hydrogen induced hyperpolarisation of ¹H and ¹⁹F NMR resonances at 1.4 Tesla

J. S. Doll, J. Kergassner, B. Zhang, C. M. Thiele, G. Buntkowsky, M. Enders, T. Gutmann and D. Roşca, Chem. Commun., 2025, Advance Article , DOI: 10.1039/D5CC02409A

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Chemical Communications