Abstract
Mechanically chelating ligands have untapped potential for the engineering of metal ion properties. Here we demonstrate this principle in the context of CoII-based single-ion magnets. Using multi-frequency EPR, susceptibility and magnetization measurements we found that these complexes show some of the highest zero field splittings reported for five-coordinate CoII complexes to date. The predictable coordination behaviour of the interlocked ligands allowed the magnetic properties of their CoII complexes to be evaluated computationally a priori and our combined experimental and theoretical approach enabled us to rationalize the observed trends. The predictable magnetic behaviour of the rotaxane CoII complexes demonstrates that interlocked ligands offer a new strategy to design metal complexes with interesting functionality.
Original language | English |
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Pages (from-to) | 16051-16058 |
Number of pages | 8 |
Journal | Angewandte Chemie (International Edition) |
Volume | 60 |
Issue number | 29 |
Early online date | 26 Apr 2021 |
DOIs | |
Publication status | Published - 12 Jul 2021 |
Keywords
- electron paramagnetic resonance
- magnetism
- rotaxanes
- single ion magnets
- zero-field splitting