6533b870fe1ef96bd12cfbca
RESEARCH PRODUCT
Asymmetric Ring Opening in a Tetrazine-Based Ligand Affords a Tetranuclear Opto-Magnetic Ytterbium Complex.
Muralee MurugesuJani O. MoilanenJeffrey S. OvensPaul RichardsonYixin ZhangRiccardo MarinBulat Gabidullinsubject
Lanthanide010405 organic chemistryLigandOrganic ChemistryRelaxation (NMR)Bridging ligandGeneral Chemistry010402 general chemistryRing (chemistry)01 natural sciencesCatalysis0104 chemical sciencesTetrazinechemistry.chemical_compoundCrystallographychemistryMoleculeLuminescencedescription
We report the formation of a tetranuclear lanthanide cluster, [Yb4 (bpzch)2 (fod)10 ] (1), which occurs from a serendipitous ring opening of the functionalised 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 characterised to analyse its magnetisation dynamics and its luminescence behaviour. Computational studies validate the observed MJ 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 rationalised analysing the luminescent properties. This marks the first lanthanide-containing molecule that forms by means of an asymmetric tetrazine decomposition.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-12-16 | Chemistry (Weinheim an der Bergstrasse, Germany) |