Abstract
To achieve a heterometallic single-molecule magnet with novel topologies, two isostructural hexanuclear clusters [Ni4Ln2(μ3-OH)2L4(OAc)8]·H2O [Ln = Dy, 1; Y, 2] were prepared from the reactions of 1,3-diamine-2-propanol (HL) with MCl3·6H2O (M = Dy, Y) and Ni(OAc)2·4H2O in acetonitrile, in which the studies for 2 with the diamagnetic metal ion of Y(iii) are just for further understanding of the magnetic properties of 1. Single-crystal X-ray diffraction measurements indicate that both heterometallic hexanuclear complexes possess an S-shaped double-pocket skeleton with the two M(iii) ions separated by a chair-like Ni4O4 moiety. The temperature- and frequency-dependent alternating-current (ac) susceptibility measurements under zero dc fields revealed a single-molecule magnet for 1. Its magnetic properties can be further understood based on the magnetic analysis of 2.
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