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Published on: September 19, 2017
Heterometallic hexanuclear Ni4M2 (M = Dy, Y) complexes: structure and single-molecule magnet for the Dy(iii)
Shaomin Pei1, Zhaobo Hu, Zilu Chen
1State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China. zlchen@mailbox.gxnu.edu.cn fliangoffice@yahoo.com.
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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