Riesinger Christoph, Erhard Alexander, Scheer Manfred
Institute of Inorganic Chemistry, University of Regensburg, Universitätsstr. 31, Regensburg 93053, Germany.
Chem Commun (Camb). 2023 Aug 17;59(67):10117-10120. doi: 10.1039/d3cc03369d.
A systematic study on the reactivity of the -P complexes [CpTa(CO)(η-P)] towards pnictogenium cations results in the formation of functionalised interpnictogen cations. Phosphenium ions insert into one of the P-P bonds to give ring-expanded -PR products. In contrast, an arsenium-functionalised PAsCy ligand displays an interesting borderline case between ring expansion and coordination, while stibenium cations afford addition products. Tuning of the steric and electronic properties of the stibenium ion shows a drastic influence on the reaction outcome.
对 -P 配合物 [CpTa(CO)(η-P)] 与鎓阳离子反应活性的系统研究导致形成了功能化的族间阳离子。鏻离子插入到一个 P-P 键中生成环扩展的 -PR 产物。相比之下，一个砷功能化的 PAsCy 配体在环扩展和配位之间表现出一个有趣的临界情况，而锍阳离子则提供加成产物。锍离子空间和电子性质的调节对反应结果有显著影响。
