Lanthanoid single-ion magnets based on polyoxometalates with a 5-fold symmetry: the series [LnP5W30O110]12- (Ln3+ = Tb, Dy, Ho, Er, Tm, and Yb).
A robust, stable and processable family of mononuclear lanthanoid complexes based on polyoxometalates (POMs) that exhibit single-molecule magnetic behavior is described here. Preyssler polyanions of general formula [LnP(5)W(30)O(110)](12-) (Ln(3+) = Tb, Dy, Ho, Er, Tm, and Yb) have been characterized with static and dynamic magnetic measurements and heat capacity experiments. For the Dy and Ho derivatives, slow relaxation of the magnetization has been found. A simple interpretation of these properties is achieved by using crystal field theory.
Instituto de Ciencia Molecular, Universidad de Valencia, Catedrático José Beltrán Martínez No. 2, 46980 Paterna, Spain.
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Cardona-Serra
J M
JM
Clemente-Juan
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Coronado
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A
Gaita-Ariño
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A
Camón
M
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Evangelisti
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F
Luis
M J
MJ
Martínez-Pérez
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J
Sesé