Improved slow magnetic relaxation in optically pure helicene-based DyIII single molecule magnets. Issue 100 (1st December 2016)

• Record Type: Journal Article
• Authors: Ou-Yang, J.-K.; Saleh, N.; Fernandez Garcia, G.; Norel, L.; Pointillart, F.; Guizouarn, T.; Cador, O.; Totti, F.; Ouahab, L.; Crassous, J.; Le Guennic, B.
• Is Part Of: Chemical communications. Volume 52:Issue 100(2016)
• Page Start: 14474
• Page End: 14477
• Publication Date: 2016-12-01
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c6cc08638a
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Racemic and optically pure [Dy(hfac)3 (L)] complexes with L = 3-(2-pyridyl)-4-aza[6]-helicene have been synthesized and characterized. Abstract : Racemic and optically pure [Dy(hfac)3 (L )] complexes withL = 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.