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Issue 46, 2015
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Construction of NiIILnIIIMIII (Ln = GdIII, TbIII; M = FeIII, CrIII) clusters showing slow magnetic relaxations

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Abstract

Four heterotrimetallic 3d–3d′–4f complexes, [Ni(L)Gd(H2O)4][Cr(CN)6]CH3OH·2H2O (1), [Ni(L)Tb(H2O)4][Cr(CN)6]CH3OH·2H2O (2), [Ni(L)Gd(H2O)4][Fe(CN)6]·3H2O (3), and [Ni(L)Tb(H2O)4][Fe(CN)6]CH3OH·2H2O (4) (H2L = N,N-ethylenebis(3-methoxysalicylaldiimine)), were synthesized and characterized structurally and magnetically. The X-ray structural analysis revealed that these complexes are isostructural, in which NiIILnIIIMIII (Ln = TbIII, GdIII; M = FeIII, CrIII) is arranged in trinuclear clusters. Then, these clusters further interact with each other via weak hydrogen bonds to form high dimensional supramolecular networks. Magnetic investigation indicates that the Ni(II) centers are diamagnetic. Dominant antiferromagnetic coupling is presented in complexes 1 and 3. An ac magnetic susceptibility measurement indicates that complexes 2 and 4 show typical field induced slow magnetic relaxation, which might be caused by the magnetic anisotropy of the central TbIII ions.

Graphical abstract: Construction of NiIILnIIIMIII (Ln = GdIII, TbIII; M = FeIII, CrIII) clusters showing slow magnetic relaxations

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Publication details

The article was received on 15 Sep 2015, accepted on 19 Oct 2015 and first published on 22 Oct 2015


Article type: Paper
DOI: 10.1039/C5DT03620H
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Dalton Trans., 2015,44, 20193-20199

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    Construction of NiIILnIIIMIII (Ln = GdIII, TbIII; M = FeIII, CrIII) clusters showing slow magnetic relaxations

    C. Chen, Y. Liu, P. Li, H. Zhou and X. Shen, Dalton Trans., 2015, 44, 20193
    DOI: 10.1039/C5DT03620H

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