Abstract
Six novel decanuclear clusters with formula of {[Fe8Ln2(O)4(OH)4(EtO)2(dhbp)4(dhbpH)2(piv)6]·4EtOH} (Ln = Y (1), Gd (2), Tb (3), Dy (4), Ho (5), Er (6), dhbpH2 = 6,6′‐dihydroxyl‐2,2′‐bipyridine, Hpiv = pivalic acid, EtOH = ethanol) have been synthesized and characterized. Single‐crystal and powder X‐ray diffraction analyses reveal that complexes 1–6 are isostructural and show a sandwich‐like FeIII8LnIII2 structure, in which the [Ln2] unit is sandwiched by two planar [Fe4] units. Magnetic properties of complexes 1–6 have been investigated and display dominant antiferromagnetic interactions, thereinto, complexes 4 and 6 display weak ferromagnetic behaviors associated with LnIII ions, while others are antiferromagnetic‐like features. Furthermore, complex 4 (FeIII8DyIII2) shows temperature/frequency‐dependent ac signals with an energy barrier of 4.1 K, indicating that complex 4 should be a single‐molecule magnet (SMM)
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