Four Mixed 3d-4f 12-Metallacrown-4 Complexes: Syntheses, Structures and Magnetic Properties

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	Four Mixed 3d-4f 12-Metallacrown-4 Complexes: Syntheses, Structures and Magnetic Properties
	Qin, Yaru 1; Gao, Qian 1; Chen, Yanmei 2; Liu, Wei 1; Lin, Feng 3; Zhang, XiangFei 3; Dong, Yaping3 ; Li, Yahong 1
	2017-05-01
发表期刊	JOURNAL OF CLUSTER SCIENCE
卷号	28 期号:3 页码:891-903
关键词	Metallacrowns Heterometallic Clusters Solvothermal Synthesis Magnetic Properties
摘要	The incorporation of Ln(III) ions into the 12-metallacrown-4 topology affords the formation of four mixed 3d-4f pentanuclear complexes of compositions [NH(C2H5)(3)]{[Ln(OAc)(4)] [12-MCMn(N)shiIII-4]}center dot xH(2)O (Ln = Sm (1), Gd (2), Tb (3), Dy (4); x = 0.5 for 1 and 3, x = 0.25 for 2, x = 0 for 4; H(3)shi = salicylhydroxamic acid). Compounds 1-4 were obtained from the reactions of H(3)shi with Mn(CH3COO)(2)center dot 4H(2)O and Ln(NO3)(3)center dot 6H(2)O, in the presence of N(C2H5)(3). They all contain a crown-like [Mn(4)Ln(mu-NO)(4)](11+) core with four Mn-III atoms being at the rim of the crown and an Ln(III) ion occupying the dome of the crown. The peripheral ligation about the core is provided by four eta(1):eta(1):mu acetate groups. The identity of the Ln(III) ions slightly affects the 12-metallacrown-4 frameworks, as demonstrated by the gradual decrease of the distances between the Ln(III) ions and the centres of the Mn-4 planes (1.85 angstrom for 1, 1.81 angstrom for 2, 1.80 angstrom for 3, and 1.77 angstrom for 4). Variable-temperature dc magnetic susceptibility studies were carried out on polycrystalline samples of 1-4. Antiferromagnetic interactions are determined for complexes 1-4.
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/363002/6211
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.Huanggang Normal Univ, Coll Chem Engn, Huanggang 438000, Peoples R China 3.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
推荐引用方式 GB/T 7714	Qin, Yaru,Gao, Qian,Chen, Yanmei,et al. Four Mixed 3d-4f 12-Metallacrown-4 Complexes: Syntheses, Structures and Magnetic Properties[J]. JOURNAL OF CLUSTER SCIENCE,2017,28(3):891-903.
APA	Qin, Yaru.,Gao, Qian.,Chen, Yanmei.,Liu, Wei.,Lin, Feng.,...&Li, Yahong.(2017).Four Mixed 3d-4f 12-Metallacrown-4 Complexes: Syntheses, Structures and Magnetic Properties.JOURNAL OF CLUSTER SCIENCE,28(3),891-903.
MLA	Qin, Yaru,et al."Four Mixed 3d-4f 12-Metallacrown-4 Complexes: Syntheses, Structures and Magnetic Properties".JOURNAL OF CLUSTER SCIENCE 28.3(2017):891-903.