The discovery of a series of lanthanide complexes behaving as Single Molecule Magnets (SMMs) has resulted
in the rapid expansion of this field in the past few years. In this review, we focus on dysprosium-based SMMs assembled
from versatile hydrazone ligands. The studies on a series of Dy2 complexes and Dy6 triangular prism indicate that the Dy2
unit with hula hoop-like geometry represents an excellent building block for the assembly of polynuclear dysprosium
complexes. Structural and magnetic investigations on such system suggest that the hydrazone ligands are suitable candidates
to construct robust dysprosium-based SMMs and to probe their relaxation dynamics.
Keywords: Anisotropy, assembly, hydrazone ligands, coordination geometry, interactions, lanthanide, polynuclear, single
molecule magnet, tautomerism.
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