A1 Journal article (refereed)
Asymmetric Ring Opening in Tetrazine‐based Ligand Affording a Tetranuclear Opto‐Magnetic Ytterbium Complex (2021)

Richardson, P., Marin, R., Zhang, Y., Gabidullin, B., Ovens, J., Moilanen, J. O., & Murugesu, M. (2021). Asymmetric Ring Opening in Tetrazine‐based Ligand Affording a Tetranuclear Opto‐Magnetic Ytterbium Complex. Chemistry : A European Journal, 27(7), 2361-2370. https://doi.org/10.1002/chem.202003556

JYU authors or editors

Publication details

All authors or editors: Richardson, Paul; Marin, Riccardo; Zhang, Yixin; Gabidullin, Bulat; Ovens, Jeffrey; Moilanen, Jani O.; Murugesu, Muralee

Journal or series: Chemistry : A European Journal

ISSN: 0947-6539

eISSN: 1521-3765

Publication year: 2021

Publication date: 14/09/2020

Volume: 27

Issue number: 7

Pages range: 2361-2370

Publisher: Wiley-VCH Verlag

Publication country: Germany

Publication language: English

DOI: https://doi.org/10.1002/chem.202003556

Publication open access: Not open

Publication channel open access:

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/71925

Abstract

We report the formation of a tetranuclear lanthanide cluster, [Yb 4 (bpzch) 2 (fod) 10 ] ( 1 ), which occurs from a serendipitous ring opening of the functionalized tetrazine bridging ligand, bpztz (3,6‐dipyrazin‐2‐yl‐1,2,4,5‐tetrazine) upon reacting with Yb(fod) 3 (fod ‐ = 6,6,7,7,8,8,8‐heptafluoro‐2,2‐dimethyl‐3,5‐octandionate). Compound 1 was structurally elucidated via single‐crystal X‐ray crystallography and subsequently magnetically and spectroscopically characterized to analyse its magnetisation dynamics and its luminescence behaviour. Computational studies validate the observed M J energy levels attained by spectroscopy and provides a clearer picture of the slow relaxation of the magnetisation dynamics and relaxation pathways. These studies demonstrate that 1 acts as a single‐molecule magnet (SMM) under an applied magnetic field in which the relaxation occurs via a combination of Raman, direct, and quantum tunnelling processes, a behaviour further rationalized analysing the luminescent properties. This marks the first lanthanide‐containing molecule that forms by means of an asymmetric tetrazine decomposition.

Keywords: coordination complexes; rare earth metals; magnetic properties; optical properties; luminescence

Free keywords: opto-magnetic properties; photoluminescence; single-molecule magnets; tetrazine; ytterbium

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Ministry reporting: Yes

Reporting Year: 2021

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