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A Family of 3d-4f Octa-Nuclear [Mn(4)(III)Ln(4)(III)] Wheels (Ln = Sm, Gd, Tb, Dy, Ho, Er, and Y): Synthesis, Structure, and Magnetism
Li, Mengyuan1,2; Lan, Yanhua1; Ako, Ayuk M.1,3; Wernsdorfer, Wolfgang4; Anson, Christopher E.1; Buth, Gernot5; Powell, Annie K.1,3; Wang, Zheming2; Gao, Song2
2010-12-20
Source PublicationINORGANIC CHEMISTRY
ISSN0020-1669
Volume49Issue:24Pages:11587-11594
AbstractWe present the syntheses, crystal structures, and magnetochemical characterizations for a family of isostructural [Mn(4)Ln(4)] compounds (Ln = Sm, Gd, Tb, Dy, Ho, Er, and Y). They were prepared from the reactions of formic acid, propionic acid, N-n-butyl-diethanolamine, manganese perchlorate, and lanthanide nitrates under the addition of triethylamine in MeOH. The compounds possess an intriguing hetero-octanuclear wheel structure with bur Mn-III and four Ln(III) ions alternatively arranged in a saddle-like ring, where formate ions act as key carboxylate bridges. In the lattice, the molecules stack into columns in a quasi-hexagonal arrangement, Direct current (dc) magnetic susceptibility measurements indicated the depopulation of the Stark components at low temperature and/or very weak antiferromagnetic interactions between magnetic centers. The zero-field alternating current (ac) susceptibility studies revealed that the compounds containing Sm, Tb, and Dy showed frequency-dependent out-of-phase signals, indicating they are single-molecule magnets (SMMs). Magnetization versus applied dc field sweeps on a single crystal of the Dy compound down to 40 mK exhibited hysteresis depending on temperatures and field sweeping rates, further confirming that the Dy compound is a SMM. The magnetization dynamics of the Sm and Y compounds investigated under dc fields revealed that the relaxation of the Sm compound is considered to be dominated by the two-phonon (Orbach) process while the Y compound displays a multiple relaxation process.
DOI10.1021/ic101754g
Indexed BySCI
Language英语
WOS IDWOS:000285266800037
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:100[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/70398
Collection中国科学院化学研究所
Corresponding AuthorPowell, Annie K.
Affiliation1.Univ Karlsruhe, Inst Anorgan Chem, Karlsruhe Inst Technol, D-76131 Karlsruhe, Germany
2.Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
3.Forschungszentrum Karlsruhe, Inst Nanotechnol, Karlsruhe Inst Technol, D-76021 Karlsruhe, Germany
4.Inst Neel CNRS, F-38042 Grenoble, France
5.Karlsruhe Inst Technol, ISS, FZK, D-76021 Karlsruhe, Germany
Recommended Citation
GB/T 7714
Li, Mengyuan,Lan, Yanhua,Ako, Ayuk M.,et al. A Family of 3d-4f Octa-Nuclear [Mn(4)(III)Ln(4)(III)] Wheels (Ln = Sm, Gd, Tb, Dy, Ho, Er, and Y): Synthesis, Structure, and Magnetism[J]. INORGANIC CHEMISTRY,2010,49(24):11587-11594.
APA Li, Mengyuan.,Lan, Yanhua.,Ako, Ayuk M..,Wernsdorfer, Wolfgang.,Anson, Christopher E..,...&Gao, Song.(2010).A Family of 3d-4f Octa-Nuclear [Mn(4)(III)Ln(4)(III)] Wheels (Ln = Sm, Gd, Tb, Dy, Ho, Er, and Y): Synthesis, Structure, and Magnetism.INORGANIC CHEMISTRY,49(24),11587-11594.
MLA Li, Mengyuan,et al."A Family of 3d-4f Octa-Nuclear [Mn(4)(III)Ln(4)(III)] Wheels (Ln = Sm, Gd, Tb, Dy, Ho, Er, and Y): Synthesis, Structure, and Magnetism".INORGANIC CHEMISTRY 49.24(2010):11587-11594.
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