Dimers and chains of {3d-4f} single molecule magnets constructed from heterobimetallic tectons. - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Dalton Transactions Année : 2010

Dimers and chains of {3d-4f} single molecule magnets constructed from heterobimetallic tectons.

Résumé

A tetranuclear complex and a 1-D coordination polymer with a ladder-like topology have been obtained by connecting [Ni(II)Dy(III)] nodes with dicarboxylato ligands: [Ni₂(valpn)₂Dy₂(III)(pdca)₂(NO₃)(H₂O)₆](NO₃)*4H₂O 1, and (∞)¹[Ni₂(H₂O)₂(valpn)₂Dy₂(tfa)₃]*4CH₃CN 2 (valpn²⁻ = the dianion of the Schiff base resulting from reacting o-vanillin with 1,3-propanediamine; pdca²⁻ = the dianion of 2,6-pyridinedicarboxylic acid; tfa²⁻ = the dianion of the terephthalic acid). The magnetic measurements show a ferromagnetic interaction between Ni(II) and Dy(III), and that both compounds behave like SMM with strong tunnelling. The barrier of 2 (17.4 K) is higher than that of 1 (13.6 K).
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Dates et versions

hal-00524732 , version 1 (22-07-2013)

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Traian D. Pasatoiu, Mael Etienne, Augustin M. Madalan, Marius Andruh, Roberta Sessoli. Dimers and chains of {3d-4f} single molecule magnets constructed from heterobimetallic tectons.. Dalton Transactions, 2010, 39 (20), pp.4802-8. ⟨10.1039/B925425K⟩. ⟨hal-00524732⟩
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