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Issue 42, 2016
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Terminal solvent effects on the anisotropy barriers of Dy2 systems

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Abstract

A family of three dinuclear dysprosium complexes have been successfully synthesized and studied in terms of their magnetic properties. Complexes 1 and 2 share the formula [Dy2(ovph)2Cl2(solvent)2], where H2ovph = pyridine-2-carboxylic acid [(2-hydroxy-3-methoxyphenyl)methylene] hydrazide, and solvent = DMF (1), i-PrOH (2), while complex 3, [Dy2(ovph)2Cl2(H2O)3(EtOH)], exhibits differences in terms of the identity and number of coordinated solvent molecules. Thus, we investigate the impact of terminally bonded solvent molecules on the slow relaxation dynamics of {Dy2} SMMs, a parameter which can sometimes be overlooked in the quest to attain higher energy barriers. Notably, the exchange of DMF for i-PrOH, both of which coordinate through a single oxygen atom, results in a near 2-fold increase in Ueff, from 58 to 98 K, for 1 and 2, respectively.

Graphical abstract: Terminal solvent effects on the anisotropy barriers of Dy2 systems

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Publication details

The article was received on 29 Aug 2016, accepted on 07 Oct 2016, published on 17 Oct 2016 and first published online on 17 Oct 2016


Article type: Paper
DOI: 10.1039/C6DT03366K
Citation: Dalton Trans., 2016,45, 16709-16715
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    Terminal solvent effects on the anisotropy barriers of Dy2 systems

    Y. Jiang, G. Brunet, R. J. Holmberg, F. Habib, I. Korobkov and M. Murugesu, Dalton Trans., 2016, 45, 16709
    DOI: 10.1039/C6DT03366K

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