Title:    The close and loose Relationship between Carbon and Phosphorus

Time:     2025-04-25 10:00

Lecturer:  Prof. Manfred Scheer

Institute of Inorganic Chemistry, University of Regensburg

Venue:    Room 202, Lu-Jiaxi Building

Abstract：

Polyphosphorus units are an important class of compound and isolobal to carbon-based relatives. Because of the lone pairs at the phosphorus atoms, the five-fold symmetric cyclo-P5 ring of the pentaphosphaferrocenes [CpRFe(η5 -P5)] enables the use of these complexes in unique supramolecular aggregations with Lewis acidic transition metal moieties to form unprecedented giant spherical molecules. The talk will show versatile ways of the reactivity of this interesting class of compounds regarding their redox behavior as well as their ability to be converted by both nucleophiles and electrophiles. Concerning the redox properties, novel insights into E-E bond formation and breaking are presented. The frontier orbitals of polypnictogen ligand complexes show clearly the ability to be converted by both nucleophiles and electrophiles. Therefore, novel ways of access to substitution reactions and subsequent quenching result in unique pathways for the selective formation e.g. of asymmetric phosphines.