Synthesis, structure, photophysical and chiroptical properties of dinuclear rhenium complexes with a bridging helicene‐bis‐bipyridine ligand

Crassous, Jeanne; Saleh, Nidal; Kundu, Debsouri; Vanthuyne, Nicolas; Olesiak, Joanna; Pniakowska, Anna; Matczyszyn, Katarzyna; Chang, Victoria; Muller, Gilles; Williams, Gareth; Srebro-Hooper, Monika; Autschbach, Jochen

doi:10.1002/cplu.202000559

Synthesis, structure, photophysical and chiroptical properties of dinuclear rhenium complexes with a bridging helicene‐bis‐bipyridine ligand

Crassous, Jeanne; Saleh, Nidal; Kundu, Debsouri; Vanthuyne, Nicolas; Olesiak, Joanna; Pniakowska, Anna; Matczyszyn, Katarzyna; Chang, Victoria; Muller, Gilles; Williams, Gareth; Srebro-Hooper, Monika; Autschbach, Jochen

Authors

Jeanne Crassous

Nidal Saleh

Debsouri Kundu

Nicolas Vanthuyne

Joanna Olesiak

Anna Pniakowska

Katarzyna Matczyszyn

Victoria Chang

Gilles Muller

Professor Gareth Williams j.a.g.williams@durham.ac.uk
Professor

Monika Srebro-Hooper

Jochen Autschbach

Abstract

By attaching pyridine groups to a diaza[6]helicene, a helical, bis‐ditopic, bis‐N^N‐coordinating ligand can be accessed. Dinuclear rhenium complexes featuring this bridging ligand, of the form [{Re(CO)3Cl}2(N^N–N^N)], have been prepared and resolved to give enantiopure complexes. They are phosphorescent in solution at room temperature under one‐ and two‐photon excitation. Their experimental chiroptical properties (optical rotation, electronic circular dichroism and circularly polarized emission) have been measured. They show, for instance, emission dissymmetry factors of c.a. ±3.10‐3. Quantum‐chemical calculations indicate the importance of stereochemistry on the optical activity, pointing towards further design improvements in such types of complexes.

Citation

Crassous, J., Saleh, N., Kundu, D., Vanthuyne, N., Olesiak, J., Pniakowska, A., …Autschbach, J. (2020). Synthesis, structure, photophysical and chiroptical properties of dinuclear rhenium complexes with a bridging helicene‐bis‐bipyridine ligand. ChemPlusChem, 85(11), 2446-2454. https://doi.org/10.1002/cplu.202000559

Journal Article Type	Article
Acceptance Date	Sep 2, 2020
Online Publication Date	Sep 23, 2020
Publication Date	2020-11
Deposit Date	Sep 8, 2020
Publicly Available Date	Sep 24, 2021
Journal	ChemPlusChem
Electronic ISSN	2192-6506
Publisher	Wiley
Peer Reviewed	Peer Reviewed
Volume	85
Issue	11
Pages	2446-2454
DOI	https://doi.org/10.1002/cplu.202000559

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Copyright Statement
This is the peer reviewed version of the following article: Crassous, Jeanne, Saleh, Nidal, Kundu, Debsouri, Vanthuyne, Nicolas, Olesiak, Joanna, Pniakowska, Anna, Matczyszyn, Katarzyna, Chang, Victoria, Muller, Gilles, Williams, Gareth, Srebro-Hooper, Monika & Autschbach, Jochen (2020). Synthesis, structure, photophysical and chiroptical properties of dinuclear rhenium complexes with a bridging helicene‐bis‐bipyridine ligand. ChemPlusChem 85(11): 2446-2454 which has been published in final form at https://doi.org/10.1002/cplu.202000559. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.