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A series of dinuclear lanthanide complexes with slow magnetic relaxation for Dy-2 and Ho-2
Zhang, Jin1; Zhang, Haifeng1; Chen, Yanmei1; Zhang, Xiangfei2; Li, Yahong1; Liu, Wei1; Dong, Yaping2
2016
发表期刊DALTON TRANSACTIONS
卷号45期号:41页码:16463-16470
文章类型Article
摘要The employment of a new Schiff base ligand, 2-{[(2-hydroxy-3-methoxybenzyl) imino] methyl} naphthalen-1-ol (H2L), in 4f-metal chemistry has led to the formation of seven new isostructural lanthanide(III) complexes. More specifically the 1 : 1 reaction of Ln(NO3)(3)center dot 6H(2)O and H2L in ethanol in the presence of 3 equivalents of pyridine yielded seven dinuclear complexes of compositions [Ln(2)L(2)(NO3)(2)(C2H5OH)(2)]center dot 0.5py (Ln = Eu (1), Gd (2), Tb (3), Dy (4), Ho (5), Er (6), Yb (7); py = pyridine). The structures of the isomorphous complexes 1-7 were determined by single-crystal X-ray crystallography. X-ray crystallography data reveal that each compound is neutral, and contains two doubly-deprotonated ligands, two chelated nitrates and two coordinated ethanol molecules. The two Ln(III) atoms in 1-7 are doubly bridged by the two phenolato oxygen atoms of two L2- ligands. Each of the two lanthanide ions is eight-coordinated and possesses distorted dodecahedron geometry. Dc magnetic susceptibility studies in the 2-300 K range reveal probably a weak antiferromagnetic interaction for 2, 3 and 6, and a ferromagnetic interaction at low temperature for 4 and 5. Complexes 4 and 5 show slow magnetic relaxation behavior. The U-eff for 4 of 66.7 K is a relatively high value among the reported Dy-2 SMMs. Complex 5 is a very rare example of a Ho-2 compound which exhibits slow magnetic relaxation.
WOS标题词Science & Technology ; Physical Sciences
关键词[WOS]SINGLE-MOLECULE MAGNET ; METAL-ORGANIC FRAMEWORKS ; DYSPROSIUM(III) COMPLEX ; CRYSTAL-STRUCTURE ; BRIDGING LIGAND ; SMM BEHAVIOR ; ION MAGNETS ; LUMINESCENCE ; ANISOTROPY ; ANION
收录类别SCI
语种英语
WOS研究方向Chemistry
WOS类目Chemistry, Inorganic & Nuclear
WOS记录号WOS:000386221300048
引用统计
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/6359
专题青海盐湖研究所知识仓储
盐湖资源综合利用工程技术中心
作者单位1.Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China
2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Xining 810008, Peoples R China
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GB/T 7714
Zhang, Jin,Zhang, Haifeng,Chen, Yanmei,et al. A series of dinuclear lanthanide complexes with slow magnetic relaxation for Dy-2 and Ho-2[J]. DALTON TRANSACTIONS,2016,45(41):16463-16470.
APA Zhang, Jin.,Zhang, Haifeng.,Chen, Yanmei.,Zhang, Xiangfei.,Li, Yahong.,...&Dong, Yaping.(2016).A series of dinuclear lanthanide complexes with slow magnetic relaxation for Dy-2 and Ho-2.DALTON TRANSACTIONS,45(41),16463-16470.
MLA Zhang, Jin,et al."A series of dinuclear lanthanide complexes with slow magnetic relaxation for Dy-2 and Ho-2".DALTON TRANSACTIONS 45.41(2016):16463-16470.
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