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Issue 15, 2018
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Synthesis, structure and magnetic properties of tris(pyrazolyl)methane lanthanide complexes: effect of the anion on the slow relaxation of magnetization

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Abstract

We report on the synthesis, structure and investigation of magnetic properties of a series of six heteroleptic complexes of the general formula [Ln(Tpm)X3yMeCN (Tpm = tris(3,5-dimethylpyrazolyl)methane; Ln = Tb, Dy, Er; X = NO3, Cl and y = 1 or 2). We demonstrate that the observation of a field-induced slow relaxation of magnetization is highly dependent on the anion's nature. While nitrate moieties appear to be suitable to stabilize the oblate electronic density of Dy3+, chloride ions generate an equatorial crystal-field allowing the slow relaxation of the prolate Er3+ ions.

Graphical abstract: Synthesis, structure and magnetic properties of tris(pyrazolyl)methane lanthanide complexes: effect of the anion on the slow relaxation of magnetization

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Publication details

The article was received on 02 Feb 2018, accepted on 01 Mar 2018 and first published on 02 Mar 2018


Article type: Communication
DOI: 10.1039/C8DT00458G
Citation: Dalton Trans., 2018,47, 5153-5156
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    Synthesis, structure and magnetic properties of tris(pyrazolyl)methane lanthanide complexes: effect of the anion on the slow relaxation of magnetization

    J. Long, D. M. Lyubov, T. V. Mahrova, A. V. Cherkasov, G. K. Fukin, Y. Guari, J. Larionova and A. A. Trifonov, Dalton Trans., 2018, 47, 5153
    DOI: 10.1039/C8DT00458G

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