Improved slow magnetic relaxation in optically pure helicene-based Dy(III) single molecule magnets

Racemic and optically pure [Dy(hfac)(L)] complexes with L = 3-(2-pyridyl)-4-aza[6]-helicene have been synthesized and characterized. Both the racemic and enantiopure forms behave as single molecule magnets in their crystalline phase, while electronic circular dichroism activity is evidenced. Ab init...

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Bibliographic Details
Published inChemical communications (Cambridge, England) Vol. 52; no. 100; pp. 14474 - 14477
Main Authors Ou-Yang, Jiang-Kun, Saleh, Nidal, Fernandez-Garcia, Guglielmo, Norel, Lucie, Pointillart, Fabrice, Guizouarn, Thierry, Cador, Olivier, Totti, Federico, Ouahab, Lahcene, Crassous, Jeanne, Le Guennic, Boris
Format Journal Article
LanguageEnglish
Published Royal Society of Chemistry 2016
Subjects
Chemical Sciences
Organic chemistry
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Summary:Racemic and optically pure [Dy(hfac)(L)] complexes with L = 3-(2-pyridyl)-4-aza[6]-helicene have been synthesized and characterized. Both the racemic and enantiopure forms behave as single molecule magnets in their crystalline phase, while electronic circular dichroism activity is evidenced. Ab initio calculations on isolated complexes followed by the determination of intermolecular dipolar couplings allowed the rationalization of the different low-temperature magnetic behaviours. The enantiopure SMM differs from the racemic one by the presence of a hysteresis loop in the former system.
ISSN:1359-7345
1364-548X
DOI:10.1039/C6CC08638A