Abstraction of chloride from (Cp*PCl₂) with the silylium salt [Et₃Si][B(C₆F₅)₄] afforded [(η²-Cp*)PCl][B(C₆F₅)₄] (1), whereas further chloride abstraction using another equivalent [Et₃Si][B(C₆F₅)₄] was unsuccessful. The corresponding species [(η²-Cp*)PF][B(C₆F₅)₄] (2) was derived by fluoride abstraction from (Cp*PF₂). Treatment of (Cp*PF₂) with 2 equiv of [Et₃Si][B(C₆F₅)₄] gave [(η⁵-Cp*)P][B(C₆F₅)₄]₂ (3), representing an η⁵-Cp that is bound to phosphorus. 3 behaves as a phosphorus-based Lewis super acid, abstracting fluoride from [SbF₆]⁻ anion with concurrent η⁵-η²-Cp* rearrangement to give 2. Similarly, the extremely high Lewis acidity and chlorophilicity of 3 is indicated by the equilibration of 3 with Et₃SiCl to generate 1 and [Et₃Si][B(C₆F₅)₄]. The coordination of 2,2′-bipyridine (bipy) to the phosphorus of 3 induces the η⁵-η¹-Cp* rearrangement, leading to a “slipped sandwich” compound [(η¹-Cp*)P(bipy)][B(C₆F₅)₄]₂ (4). 3 also reacts with Et₃SiH via η⁵-σ-Cp* rearrangement, affording [(σ-Cp*)PH₂SiEt₃][B(C₆F₅)₄] (5) and [Et₃Si][B(C₆F₅)₄].

氯化物的抽象从（CP *的PCl ₂）与甲硅烷鎓盐[等₃的Si] [B（C ₆ ˚F ₅）₄ ]，得到[（η ² -Cp *）的PCl] [B（C ₆ ˚F ₅）₄ ] （1），而使用另一种等效的[Et ₃ Si] [B（C ₆ F ₅）₄ ]进行氯化物提取是不成功的。相应的物种[（η ² -Cp *）PF] [B（C ₆ ˚F ₅）₄ ]（2）中的溶液通过衍生氟化物从抽象（CP * PF₂）。（CP * PF的治疗₂与2当量的）的Et ₃的Si] [B（C ₆ ˚F ₅）₄〕得到〔（η ⁵ -Cp *）P] [B（C ₆ ˚F ₅）₄ ] ₂（3），表示η ⁵ -Cp绑定到磷。3个表现为磷系路易斯超酸，从[抽象的SbF氟化物₆ ] ^-阴离子与并发η ⁵ - η ² -Cp *重排，得到2。类似地，通过将3与Et ₃ SiCl平衡以生成1和[Et ₃ Si] [B（C ₆ F ₅）₄ ]，表明3的极高路易斯酸度和亲氯性。2,2'-联吡啶（联吡啶）到的磷的协调3个诱导η ⁵ - η ¹ -Cp *重排，导致“滑三明治”化合物[（η ¹ -Cp *）P（联吡啶）] [B（C ₆ F ₅）₄ ] ₂（4）。3也发生反应用Et ₃通过的SiH η ⁵ -σ-的Cp *重排，得到[（σ-的Cp *）PH ₂ SIET ₃ ] [B（C ₆ ˚F ₅）₄ ]（5）和[的Et ₃的Si] [B （C ₆ F ₅）₄ ]。