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Issue 34, 2020
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Enhanced single-molecule magnetism in dysprosium complexes of a pristine cyclobutadienyl ligand

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Abstract

Intact transfer of the cyclobutadienyl ligand [C4(SiMe3)4]2− to yttrium and dysprosium (M) produces the half-sandwich complexes [M{η4-C4(SiMe3)4}(BH4)2(THF)] as coordination polymers with bridging sodium or potassium ions. The dysprosium versions are single-molecule magnets (SMMs) with energy barriers of 371(7) and 357(4) cm−1, respectively. The pristine cyclobutadienyl ligands provide a strong axial crystal field that enhances the SMM properties relative to related cyclopentadienyl compounds.

Graphical abstract: Enhanced single-molecule magnetism in dysprosium complexes of a pristine cyclobutadienyl ligand

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Article information


Submitted
05 Mar 2020
Accepted
19 Mar 2020
First published
19 Mar 2020

This article is Open Access

Chem. Commun., 2020,56, 4708-4711
Article type
Communication

Enhanced single-molecule magnetism in dysprosium complexes of a pristine cyclobutadienyl ligand

J. P. Durrant, J. Tang, A. Mansikkamäki and R. A. Layfield, Chem. Commun., 2020, 56, 4708
DOI: 10.1039/D0CC01722A

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