An unprecedented Dy₈ cluster, [Dy₈(μ₄-O)(μ₃-OH)₈(vht)₄(NO₃)₂(H₂O)₈](NO₃)₄, composed of two fused and distorted [Dy₄(μ₃-OH)₄]⁸⁺ cubane units is reported. The bridging of the two cubanes occurs through a planar μ₄-O (oxide) moiety, and leads to the largest reported distortion of the Dy-O-Dy angles within a [Dy₄(OH)₄] cubane core. In turn, this leads to clear zero-field slow relaxation of the magnetization, characteristic of single-molecule magnets (SMMs). Further magnetic analyses suggest that the relaxation may be largely dictated by quantum tunneling of the magnetization and Raman processes.

中文翻译：

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前所未有的八核Dy ^III团簇表现出单分子磁体行为

一个前所未有的Dy ₈簇，[镝₈（μ ₄ -O）（μ ₃ -OH）₈（VHT）₄（NO ₃）₂（H ₂ O）₈ ]（NO ₃）₄，两个组成稠合和扭曲[镝₄（μ ₃ -OH）₄ ] ⁸⁺报道立方烷单元。两个立方烷的桥接通过的平面发生μ ₄ -O（氧）部分，并且导致的Dy-O-Dy的组成报道最大失真的[镝内的角度₄（OH）₄]古巴核心。反过来，这导致磁化的清晰零场慢弛豫，这是单分子磁体（SMM）的特征。进一步的磁性分析表明，弛豫可能主要由磁化和拉曼过程的量子隧穿决定。