[{(η~5-C_5Me_5)_2Sm}_4P_8]: A Molecular Polyphosphide of the Rare-Earth Elements

摘要

Monocyclic and polycyclic phosphines and their corresponding anions have been studied for decades. One of the most prominent examples in this series is the heptaphosphanotricyclane anion P_7~(3-), which can be understood by the Zirttl-Klemm-Busmann concept (Figure 1).