Magnetic effects of lanthanide bonding
Lanthanide coordination compounds have attracted attention for their persistent magnetic properties near liquid nitrogen temperature, well above alternative molecular magnets. Gould
et al
. report that introducing metal-metal bonding can enhance coercivity. Reduction of iodide-bridged terbium or dysprosium dimers resulted in a single electron bond between the metals, which enforced alignment of the other valence electrons. The resultant coercive fields exceeded 14 tesla below 50 and 60 kelvin for the terbium and dysprosium compounds, respectively. —JSY
Synthesis of 1−3, IR spectroscopy, UV−vis spectroscopy, crystallographic data, magnetic characterization, and DFT calculations (PDF) Data for C 40 H 70 Tb, BC 24 F 20 (CIF) Data for C 40 H 70 Dy (CIF) Data for C 40 H 70 Tb (CIF) ■ AUTHOR INFORMATION
Subtle changes in ligand substitution result in substantial changes in molecular structure and magnetic properties in a series of dysprosium(iii) metallocenium salts.
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