3 years ago

Single molecule magnet behavior in a calix[8]arene-capped heterometallic {DyIII4CoII4} square antiprismatic cluster

Wuping Liao, Guoshuai Zhang, Xiao-Lei Li, Xinxin Hang, Jinkui Tang, Xiaofei Zhu, Haitao Han
Two isostructural octanuclear {(LnIII4CoII4)(C8A)2} compounds (Ln = Dy, Er; H8C8A = p-tert-butylcalix[8]arene) were synthesized under solvothermal conditions for magnetic study. For comparison, an yttrium compound having a similar structure except some coordinated DEF molecules replaced by water molecules was obtained. These three compounds are featured with a sandwich-like motif in which the heterometallic {LnIII4Co4II} square antiprismatic cluster is sandwiched between two calix[8]arene molecules in double-cone conformation. Magnetic measurements revealed that the {DyIII4CoII4} compound exhibits single molecule magnet (SMM) behavior.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/ejic.201700978

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