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![]() FERBINTEANU, Marilena, KAJIWARA, Takashi, KOJIMA, Norimichi, CIMPOESU, Fanica, YAMASHITA, Masahiro. A 3d-4f approach to single-molecule magnets: synthesis and magneto-structural analysis of a new series of complexes with bis(2-pyridylcarbonyl)amine as bridging ligand. In: Physical Methods in Coordination and Supramolecular Chemistry, 27 septembrie - 1 octombrie 2006, Chişinău. Chisinau, Republic of Moldova: 2006, XVII, p. 125. ISBN 978-9975-62-066-6. |
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Physical Methods in Coordination and Supramolecular Chemistry XVII, 2006 |
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Conferința "The XV-th International Conference Physical Methods in Coordination and Supramolecular Chemistry : The XVII-th Reading in memory of Acad. A.Ablov" Chişinău, Moldova, 27 septembrie - 1 octombrie 2006 | |
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Pag. 125-125 | |
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Due to the intrinsic magnetic anisotropy of given lanthanide ions, the investigation of d-f complexes is a rational way to SMMs. Here we bring a binuclear FeIII LSDyIII SMM (1) [1] which belongs to the isostructural series [FeIII LS(bpca) (μ-bpca)LnIII(NO3)4], (where Hbpca=bis(2pyridil-carbonyl-amine; Ln=Eu, Gd, Tb, Dy, Ho). The χ’ vs χ’’ susceptibilities at different T sections follow Cole-Cole semicircular profiles (Figure 1), probing the SMM nature of 1. The relaxation barrier and time are Δ=8.98 cm-1 and τ0= 7.8·10-8s, respectively. The single relaxation process was confirmed also by the temperature dependent Mössbauer spectra. The experimental data were corroborated with the theoretical analysis in terms of Ligand Field, non-standard Spin Hamiltonian models and ab initio calculations with explicit account of the spinorbit factors driving the magnetic anisotropy. |
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