A Dysprosium Metallocene Single-Molecule Magnet Functioning at the Axial Limit.

Title	A Dysprosium Metallocene Single-Molecule Magnet Functioning at the Axial Limit.
Authors	F.S. Guo; B.M. Day; Y.C. Chen; M.L. Tong; A. Mansikkamäki; R.A. Layfield
Journal	Angew Chem Int Ed Engl
DOI	10.1002/anie.201705426
Abstract	Abstraction of a chloride ligand from the dysprosium metallocene [(Cp(ttt) )2 DyCl] (1Dy Cp(ttt) =1,2,4-tri(tert-butyl)cyclopentadienide) by the triethylsilylium cation produces the first base-free rare-earth metallocenium cation [(Cp(ttt) )2 Dy](+) (2Dy ) as a salt of the non-coordinating [B(C6 F5 )4 ](-) anion. Magnetic measurements reveal that [2Dy ][B(C6 F5 )4 ] is an SMM with a record anisotropy barrier up to 1277?cm(-1) (1837?K) in zero field and a record magnetic blocking temperature of 60?K, including hysteresis with coercivity. The exceptional magnetic axiality of 2Dy is further highlighted by computational studies, which reveal this system to be the first lanthanide SMM in which all low-lying Kramers doublets correspond to a well-defined MJ value, with no significant mixing even in the higher doublets.
Citation	F.S. Guo; B.M. Day; Y.C. Chen; M.L. Tong; A. Mansikkamäki; R.A. Layfield.A Dysprosium Metallocene Single-Molecule Magnet Functioning at the Axial Limit.. Angew Chem Int Ed Engl. 2017;56(38):1144511449. doi:10.1002/anie.201705426

Related Elements

Dysprosium

66 Dy 162.500000000 Dysprosium

See more Dysprosium products. Dysprosium (atomic symbol: Dy, atomic number: 66) is a Block F, Group 3, Period 6 element with an atomic radius of 162.5. Dysprosium Bohr Model The number of electrons in each of dysprosium's shells is [2, 8, 18, 28, 8, 2] and its electron configuration is [Xe]4f¹⁰ 6s². The dysprosium atom has an atomic radius of 178 pm and a Van der Waals radius of 229 pm. Dysprosium was first discovered by Paul Emile Lecoq de Boisbaudran in 1886. In its elemental form, dysprosium has a silvery-white appearance. Elemental Dysprosium Picture It is a member of the lanthanide or rare earth series of elements and, along with holmium, has the highest magnetic strength of all other elements on the periodic table, especially at low temperatures. Dysprosium is found in various minerals including bastnäsite, blomstrandine, euxenite, fergusonite, gadolinite, monazite, polycrase and xenotime. It is not found in nature as a free element. The element name originates from the Greek word dysprositos, meaning hard to get at.