期刊
RSC ADVANCES
卷 8, 期 2, 页码 767-774出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra11378a
关键词
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资金
- National Natural Science Foundation of China [51572050, 21601038, 21461004]
- Guangxi Natural Science Foundation [2015GXNSFDA139007, 2016GXNSFAA380085]
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials [EMFM20162107]
Two novel hexanuclear Dy-III complexes with polyhydroxy Schiff-base ligands, [Dy-6(L-1)(4)(mu(3)-OH)(4)(MeOH)(4)] Cl-2 center dot 2MeOH center dot 2MeCN (1) and [Dy-6(HL2)(2)(mu(3)-OH)(2)(mu(3)-OCH3)(2)(piv)(10)(MeOH)(2)] (2) (H3L1 = N,N'-bis(3-methoxysalicylidene)(propylene-2-ol)-1,3-diamine, H3L2 = 2,3-dihydroxypropylimino)methyl)-6methoxyphenol, piv = pivalate), have been prepared under solvothermal conditions and structurally characterized by single-crystal X-ray diffraction, elemental analyses, thermal analyses, and IR spectroscopy. Each of the hexanuclear complexes is constructed with Dy-3 triangular motifs as building blocks, and the six Dy-III ions are arranged in a chair-shaped conformation. Variable-temperature magnetic susceptibility measurements in the temperature range of 2-300 K indicate dominant ferromagnetic exchange interactions between the Dy-III ions in the complexes. Both complexes exhibit slow magnetic relaxation behavior.
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