Abstract
An octahedral {DyIII6} cage within a diamagnetic {ZnII4} rectangle is reported, with magnetic relaxation studies revealing single-molecule magnet behaviour for the complex under zero external dc field with Ueff = 43 K and τo = 1 × 10-5 s.
Highlights
Nikoleta Stavgianoudaki,a Milosz Siczek, b Tadeusz Lis,b Giulia Lorusso, c Marco Evangelisti c and Constantinos J
The field of lanthanide-based molecular magnetic materials has witnessed a vast growth over the last few years, due to the deeper understanding of the fundamental parameters that govern the magnetic behaviour of the 4f centres
For single molecule magnets (SMMs) or single-ion magnets (SIMs), i.e. molecules that are able to retain their magnetism once magnetized at low temperatures upon removal of the external magnetic field,[1] employment of 4f centres has led to exceptional magnetic properties, due to both the magnitude of the spin, as well as the spin–orbit coupling based magnetic anisotropy that the 4f species possess.[2]
Summary
In this work we present the synthesis and characterisation of a novel decanuclear [DyI6IIZnI4I] cluster, upon employment of the Schiff-base ligand 2-(β-naphthalideneamino)-2-hydroxymethyl-1-propanol, H3L, with the cluster’s topology describing a {ZnI4I} rectangle surrounding a {DyI6II} octahedron. Investigation of the magnetic properties, revealed possible SMM behaviour with Ueff = 43 K and τo = 1 × 10−5 s. To the best of our knowledge, complex 1 represents the first example of a decanuclear [DyI6IIZn4] single molecule magnet. Synthetic efforts are currently underway in order to isolate more Zn-4f clusters, as a means of investigating the effect of the diamagnetic ions on the magnetic behaviour of the 4f centres
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