The molecular and electronic structure of dysprosium triiodide, DyI(3), and its dimer, Dy(2)I(6), was determined by high level computations, gas-phase electron diffraction, and gas-phase infrared and matrix-isolation infrared and Raman spectroscopy. The free monomeric molecule is planar from all methods with an equilibrium bond length of 2.808(9) A; the thermal average bond length from electron...

Single-molecule magnets are a type of coordination compound that can retain magnetic information at low temperatures. Single-molecule magnets based on lanthanides have accounted for many important advances, including systems with very large energy barriers to reversal of the magnetization, and a di-terbium complex that displays magnetic hysteresis up to 14 K and shows strong coercivity. Ligand ...

Inverse sandwich biphenyl complexes [(NN(TBS))Ln]2(μ-biphenyl)[K(solvent)]2 [NN(TBS) = 1,1'-fc(NSi(t)BuMe2)2; Ln = Gd, Dy, Er; solvent = Et2O, toluene; 18-crown-6], containing a quadruply reduced biphenyl ligand, were synthesized and their magnetic properties measured. One of the dysprosium biphenyl complexes was found to exhibit antiferromagnetic coupling and single-molecule-magnet behavior wi...

[Cp(2)Dy(thf)(μ-Cl)](2) (2) was synthesized from [Cp(2)Dy(μ-Cl)](n), which crystalizes as two polymorphs, with n = 2 (1a) or ∞ (1b). All three compounds show slow relaxation of magnetization, and in 2 the quantum tunnelling was found to be exchange-biased.

Y.R. Kang, M.W. Lee, T.I. Ro, G.N. Kim, ∗ Y. Danon, and D. Williams Research Center, Dongnam Inst. of Radiological & Medical Sciences, Busan 619-953, Republic of Korea Department of Physics, Dong-A University, Busan 604-714, Republic of Korea Department of Physics, Kyungpook National University, Daegu 702-701, Republic of Korea Gaerttner LINAC Center, Rensselaer Polytechnic Institute Troy, New ...

Magnetostructural correlations: The magnetic relaxation dynamics of three distorted tetrahedral dysprosium aryloxide complexes are shown to vary according their local coordination environments.

Single crystals of [Dy(10)Br(18)(C(2))(2)] were obtained during the reaction of DyBr(3) with dysprosium metal and graphite in a sealed tantalum container. In the crystal structure, the Dy atoms form dimers of edge-sharing octa-hedra, each encapsulating a C(2) unit. The metal atoms are surrounded by Br atoms above the cluster edges and vertices, respectively. The dimers are connected to each oth...