Issue 42, 2023

Dipotassiumtetrachloride-bridged dysprosium metallocenes: a single-molecule magnet

Abstract

The present work describes the dynamic magnetic properties of the complex [(CpAr3)4DyIII2Cl4K2]·3.5(C7H8) (1), synthesized by employing a tri-aryl-substituted cyclopentadienyl ligand (CpAr3), [4,4′-(4-phenylcyclopenta-1,3-diene-1,2-diyl)bis(methylbenzene) = CpAr3H]. Each Dy(III)-metallocene weakly couples via K2Cl4, displaying slow relaxation of magnetization below 14.5 K under zero applied dc field via KD3 energy levels with an energy barrier of 136.9/133.7 cm−1 on the Dy sites. The single-ion axial anisotropy energy barrier is reduced by geometrical distortion due to the coordination of two chloride ions at each Dy centre.

Graphical abstract: Dipotassiumtetrachloride-bridged dysprosium metallocenes: a single-molecule magnet

Supplementary files

Article information

Article type
Communication
Submitted
04 May 2023
Accepted
09 Jun 2023
First published
09 Jun 2023

Dalton Trans., 2023,52, 15326-15333

Dipotassiumtetrachloride-bridged dysprosium metallocenes: a single-molecule magnet

S. Arumugam, B. Schwarz, P. Ravichandran, S. Kumar, L. Ungur and K. C. Mondal, Dalton Trans., 2023, 52, 15326 DOI: 10.1039/D3DT01325A

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