Heterometallic Cu/Ln cluster chemistry: ferromagnetically-coupled {Cu4Ln2} complexes exhibiting single-molecule magnetism and magnetocaloric properties

Dimitris I. Alexandropoulos; Luis Cunha-Silva; Jinkui Tang; Theocharis C. Stamatatos

doi:10.1039/C8DT01780H

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Heterometallic Cu/Ln cluster chemistry: ferromagnetically-coupled {Cu₄Ln₂} complexes exhibiting single-molecule magnetism and magnetocaloric properties†‡

Dimitris I. Alexandropoulos,^a Luis Cunha-Silva,

^b Jinkui Tang

^c and Theocharis C. Stamatatos

*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, 1812 Sir Isaac Brock Way, Brock University, L2S 3A1 St. Catharines, Ontario, Canada
E-mail: tstamatatos@brocku.ca
Tel: (+1)-905-688-5550 Ext. 3400

^b REQUIMTE-LAQV & Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal

^c State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China

Abstract

A new family of {Cu₄Ln₂} (Ln = Gd, Tb and Dy) complexes bearing the gem-diol form of di-2-pyridyl ketone [(py)₂CO] ligand is reported. Magnetic studies reveal the presence of predominant ferromagnetic exchange interactions between the metal ions. As a result, the hexanuclear compounds exhibit single-molecule magnetism behavior and large magnetic entropy changes, depending on the 4f-metal ion present.

This article is part of the themed collection: Frontiers in coordination chemistry and its applications

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Article information

DOI: https://doi.org/10.1039/C8DT01780H
Article type: Paper
Submitted: 03 ⵎⴰⵢ 2018
Accepted: 10 ⵢⵓⵍ 2018
First published: 13 ⵢⵓⵍ 2018

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Dalton Trans., 2018,47, 11934-11941

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Heterometallic Cu/Ln cluster chemistry: ferromagnetically-coupled {Cu₄Ln₂} complexes exhibiting single-molecule magnetism and magnetocaloric properties

D. I. Alexandropoulos, L. Cunha-Silva, J. Tang and T. C. Stamatatos, Dalton Trans., 2018, 47, 11934 DOI: 10.1039/C8DT01780H

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Dalton Transactions