Dhers, Sébastien ; Sahoo, Shaon ; Costes, Jean-Pierre ; Duhayon, Carine ; Ramasesha, S. ; Sutter, Jean-Pascal (2009) 1-D hydrogen-bonded organization of hexanuclear {3d-4f-5d} complexes: evidence for slow relaxation of the magnetization for [{LMe2Ni(H2O)Ln(H2O)4.5}2{W(CN)8 }2] with Ln=Tb and Dy CrystEngComm, 11 (10). pp. 2078-2083. ISSN 1466-8033
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Official URL: http://pubs.rsc.org/en/Content/ArticleLanding/2009...
Related URL: http://dx.doi.org/10.1039/B906539C
Abstract
Heterometallic {3d-4f-5d} aggregates with formula [{LMe2Ni(H2O)Ln(H2O)4.5}2{W(CN)8}2 ]·15H2O, (LMe2 stands for N,N'-2,2-dimethylpropylenedi(3-methoxysalicylideneiminato) Schiff-base ligand) with Ln=Gd, Tb, Dy, have been obtained by reacting bimetallic [LMe2Ni(H2O)2Ln(NO3)3] and Cs3{W(CN)8} in H2O. The hexanuclear complexes are organized in 1-D arrays by means of hydrogen bonds established between the solvent molecules coordinated to Ln and the CN ligands of an octacyanometallate moiety. The X-ray structure was solved for the Tb derivative. Magnetic behavior indicates ferromagnetic {W-Ni} and {Ni-Ln} interactions (JNiW=18.5 cm-1, JNiGd=1.85 cm-1) as well as ferromagnetic intermolecular interactions mediated by the H-bonds. Dynamic magnetic susceptibility studies reveal slow magnetic relaxation processes for the Tb and Dy derivatives, suggesting SMM type behavior for these compounds.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Royal Society of Chemistry. |
| ID Code: | 39498 |
| Deposited On: | 13 May 2011 09:25 |
| Last Modified: | 13 May 2011 09:33 |
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