Molecular Magnets Based on Homometallic Hexanuclear Lanthanide(III) Complexes
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https://figshare.com/articles/dataset/Molecular_Magnets_Based_on_Homometallic_Hexanuclear_Lanthanide_III_Complexes/2290633
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资源简介：
The
reaction of lanthanide(III) chloride salts (Gd(III), Dy(III), Tb(III),
and Ho(III)) with the hetero donor chelating ligand N′-(2-hydroxy-3-methoxybenzylidene)-6-(hydroxymethyl)picolinohydrazide
(LH3) in the presence of triethylamine afforded the hexanuclear
Ln(III) complexes [{Ln6(L)2(LH)2}(μ3-OH)4][MeOH]p[H2O]q[Cl]4·xH2O·yCH3OH
(1, Ln = Gd(III), p = 4, q = 4, x = 8, y = 2; 2, Ln = Dy(III), p = 2, q = 6, x = 8, y = 4; 3, Ln = Tb(III), p = 2, q = 6, x = 10, y = 4; 4, Ln = Ho(III), p =
2, q = 6, x = 10, y = 2). X-ray diffraction studies revealed that these compounds possess
a hexanuclear [Ln6(OH)4]14+ core
consisting of four fused [Ln3(OH)]8+ subunits.
Both static (dc) and dynamic (ac) magnetic properties of 1–4 have been studied. Single-molecule magnetic
behavior has been observed in compound 2 with an effective
energy barrier and relaxation time pre-exponential parameters of Δ/kB = 46.2 K and τ0 = 2.85 ×
10–7 s, respectively.
创建时间：
2014-05-19
