A series of dinuclear lanthanide complexes with slow magnetic relaxation for Dy-2 and Ho-2

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	A series of dinuclear lanthanide complexes with slow magnetic relaxation for Dy-2 and Ho-2
	Zhang, Jin 1; Zhang, Haifeng 1; Chen, Yanmei 1; Zhang, Xiangfei 2; Li, Yahong 1; Liu, Wei 1; Dong, Yaping2
	2016
发表期刊	DALTON TRANSACTIONS
卷号	45 期号:41 页码:16463-16470
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.
语种	英语
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	中国科学院青海盐湖研究所盐湖资源综合利用工程技术中心青海盐湖研究所知识仓储
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
推荐引用方式 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.