A Redox-Active Bridging Ligand to Promote Spin Delocalization, High-Spin Complexes, and Magnetic Multi-Switchability
Language
en
Article de revue
This item was published in
Angewandte Chemie International Edition. 2018-06-25, vol. 57, n° 26, p. 7841 - 7845
Wiley-VCH Verlag
English Abstract
A dinuclear CoII complex, [Co2(tphz)(tpy)2]n+ (n=4, 3 or 2; tphz: tetrapyridophenazine; tpy: terpyridine), has been assembled using the redox-active and strongly complexing tphz bridging ligand. The magnetic properties of ...Read more >
A dinuclear CoII complex, [Co2(tphz)(tpy)2]n+ (n=4, 3 or 2; tphz: tetrapyridophenazine; tpy: terpyridine), has been assembled using the redox-active and strongly complexing tphz bridging ligand. The magnetic properties of this complex can be tuned from spin-crossover with T1/2&470 K for the pristine compound (n=4) to single-molecule magnet with an ST=5/2 spin ground state when once reduced (n=3) to finally a diamagnetic species when twice reduced (n=2). The two successive and reversible reductions are concomitant with an increase of the spin delocalization within the complex, promoting remarkably large magnetic exchange couplings and high-spin species even at room temperature.Read less <
English Keywords
molecular magnetism
multiswitchability
non-innocent ligands
radicals
spin delocalization
ANR Project
Synthèse, étude et fonctionnalisation de nanoaimants moléculaires redox-actifs - ANR-16-CE29-0001
Origin
Hal imported