Synthesis, Structures, and Magnetic Properties of Three Fluoride-Bridged Lanthanide Compounds: Effect of Bridging Fluoride Ions on Magnetic Behaviors
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https://figshare.com/articles/dataset/Synthesis_Structures_and_Magnetic_Properties_of_Three_Fluoride_Bridged_Lanthanide_Compounds_Effect_of_Bridging_Fluoride_Ions_on_Magnetic_Behaviors/2505091
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资源简介：
A family of fluoride-bridged lanthanide compounds, [DyIIIF(oda)(H2O)3] (1, oda = oxidiacetate) and [LnIII2F2(oda)2(H2O)2] (Ln = Tb(2) and
Dy(3)), was synthesized and characterized. To investigate
the effects of bridging ligands on magnetic behaviors, two hydroxyl-bridged
complexes of formulas [LnIII2(OH)2(oda)2(H2O)4] (Ln = Tb(4) and Dy(5)) were also synthesized. Magnetic measurements
show that the magnetic behaviors of the compounds are obviously distinct.
Compounds 1, 2, and 3 show
ferromagnetic interactions, while only antiferromagnetic interactions
are observed in compounds 4 and 5. Among
these compounds, 1 and 3 show frequency-dependent
ac-susceptibility indicative of slow magnetic relaxation. Because
the structures of Dy2 cores are very similar in compounds 3 and 5, it may be inferred that the differences
of bridging ligands are mainly responsible for the distinct magnetic
exchange interactions and relaxation dynamics.
创建时间：
2012-07-16
