期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 26, 页码 7841-7845出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201803842
关键词
molecular magnetism; multiswitchability; non-innocent ligands; radicals; spin delocalization
资金
- ANR [ANR-16-CE29-0001-01]
- University of Bordeaux
- Region Nouvelle Aquitaine
- CNRS
- MOLSPIN COST action [CA15128]
- CSC
- EPSRC [EP/N006895/1]
- University of Southampton
- RSC
- IRIDIS High Performance Computing Facility
A dinuclear Co-II complex, [Co-2(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 T-1/2 approximate to 470 K for the pristine compound (n = 4) to single-molecule magnet with an S-T= 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.
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