Issue 46, 2015

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

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

Supplementary files

Article information

Article type
Paper
Submitted
15 Sep 2015
Accepted
19 Oct 2015
First published
22 Oct 2015

Dalton Trans., 2015,44, 20193-20199

Author version available

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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