Issue 28, 2019

Design principle of half-sandwich type erbium single-ion magnets through crystal field engineering: a combined magnetic and electronic structure study

Abstract

To conclude the design principle for high-performance erbium-based single-ion magnets (SIMs), two half-sandwich type erbium complexes 1Er [(LOMe)Er(COT)] (LOMe = [(η5-C5H5)Co{P([double bond, length as m-dash]O)(OMe)2}3], COT = cyclooctatetraenyl) and 2Er [(THF)2(OAr)Er(COT)] (Ar = 2,6-Dipp2C6H3, Dipp = 2,6-diisopropylphenyl) were synthesized, and structurally and magnetically characterized. Both of them exhibited SIM behavior. Their magnetic relaxation behaviours were further elucidated by ab initio calculations and near-IR emission spectroscopy. The results demonstrated that an axial ligand with a weaker electron-donating effect was preferential to construct high blocking barrier erbium-based SIMs.

Graphical abstract: Design principle of half-sandwich type erbium single-ion magnets through crystal field engineering: a combined magnetic and electronic structure study

Supplementary files

Article information

Article type
Communication
Submitted
11 May 2019
Accepted
17 Jun 2019
First published
18 Jun 2019

Dalton Trans., 2019,48, 10407-10411

Design principle of half-sandwich type erbium single-ion magnets through crystal field engineering: a combined magnetic and electronic structure study

Y. Meng, M. Yang, L. Xu, J. Xiong, J. Hu, T. Liu, B. Wang and S. Gao, Dalton Trans., 2019, 48, 10407 DOI: 10.1039/C9DT01954E

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