The pentalene-ligated dysprosium complex [(η⁸-Pn^†)Dy(Cp*)] (1_Dy) (Pn^† = [1,4-(ⁱPr₃Si)₂C₈H₄]²⁻) and its magnetically dilute analogue are single-molecule magnets, with energy barriers of 245 cm⁻¹. Whilst the [Cp*]⁻ ligand in 1_Dy provides a strong axial crystal field, the overall axiality of this system is attenuated by the unusual folded structure of the [Pn^†]²⁻ ligand.

中文翻译：

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单金属pen戊烯配合物的单分子磁体性能†

的并环戊二烯-连接的镝配合物[（η ⁸ -Pn ^†）的Dy（CP *）]（1_镝）（PN ^† = [1,4-（^我镨₃ Si）的₂ ç ₈ ħ ₄ ] ^2-）和它的磁稀释类似物是单分子磁体，其能垒为245 cm ^-1。尽管1 _Dy中的[Cp *] ^-配体提供了强大的轴向晶体场，但[Pn ^† ] ^2-配体的异常折叠结构削弱了该系统的整体轴向性。