3 years ago

Hard Single-Molecule Magnet Behavior by a Linear Trinuclear Lanthanide–[1]Metallocenophane Complex

Hard Single-Molecule Magnet Behavior by a Linear Trinuclear Lanthanide–[1]Metallocenophane Complex
Nattamai S. Bhuvanesh, Trevor P. Latendresse, Michael Nippe
A synthetic protocol was developed that involves the transmetalation of a mono-dysprosium–[1]ferrocenophane complex with DyX3 (X = Cl or I) to afford [Dy3Fc6Li2(THF)2], featuring a rare linear arrangement of magnetically anisotropic Dy3+ ions. The close spatial inter-lanthanide proximity, in combination with μ2-bridging sp2-hybridized CCp groups, enforces significant magnetic coupling and results in hard single-molecule magnet (SMM) behavior, with an effective barrier to magnetization reversal of up to 268 cm–1. Our results highlight the versatility of lanthanide metallocenophane architectures toward the development of novel multinuclear SMM frameworks.

Publisher URL: http://dx.doi.org/10.1021/jacs.7b08690

DOI: 10.1021/jacs.7b08690

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