Approaching the 1000 K energy barrier in high coordinate lanthanide single-ion magnets: Increasing Ueff in the [Dy(Tp2-py)F]+ moiety with tetrahydrofuran

Jarrod R Thomas; Marcus J Giansiracusa; Scott A Sulway

doi:10.1039/d4dt01194e

Approaching the 1000 K energy barrier in high coordinate lanthanide single-ion magnets: Increasing U_eff in the [Dy(Tp^2-py)F]⁺ moiety with tetrahydrofuran

Dalton Trans. 2024 Jun 4;53(22):9252-9256. doi: 10.1039/d4dt01194e.

Authors

Jarrod R Thomas¹, Marcus J Giansiracusa², Scott A Sulway¹

Affiliations

¹ School of Chemistry, The University of New South Wales (UNSW), Kensington, Sydney, 2052, Australia. [email protected].
² School of Chemistry, University of Melbourne, Parkville, Victoria, 3010, Australia. [email protected].

PMID: 38764426
DOI: 10.1039/d4dt01194e

Abstract

Using the existing architecture of [Dy(Tp^2-py)F]⁺ that supports a terminal Dy-F bond, the synthesis and isolation of [Dy(Tp^2-py)F(THF)₂](PF₆) and its diamagnetic yttrium analogue have been achieved. Alternating current magnetic susceptibility studies show an increased effective energy barrier of U_eff = 661(6) cm^-1 (951(8) K), the highest yet reported for a high coordinate (n > 8) lanthanide single-ion magnet.