Dr. Moritz Malischewski
The Schering Prize for the best dissertation in chemistry submitted at the three major universities in Berlin in 2016 will go to the chemist Dr. Moritz Malischewski for his dissertation on “Reactions of perfluorinated and permethylated compounds with strong oxidizing agents.”
Moritz Malischewski, born 1989 in Berlin, studied chemistry at FU Berlin. In 2016, he finished his PhD thesis in the research group of Prof. Seppelt with the grade summa cum laude. In 2017, he was awarded the Reaxys PhD Prize. Since August 2017, Malischewski is postdoctoral researcher at Université Pierre et Marie Curie in Paris in the research group “Edifices PolyMétalliques (E-POM)” with Prof. Anna Proust / Dr. Valérie Marvaud.
Redox reactions (or electron-transfer reactions) are one of the most fundamental type of chemical reactions and of enormous importance for the synthesis of chemical compounds. By transferring one or more electrons to an oxidant, the electronic configuration as well as the molecular structure change. The latter can be detected with single crystal X-ray diffraction. This provides valuable insight into fundamental questions of structure and chemical bonding.
In this thesis, reactions between very powerful oxidants and perfluorinated boron clusters, permethylated metallocenes and hexamethylbenzene were investigated. It was necessary to use inorganic solvents as anhydrous HF or liquid sulfur dioxide whose handling is generally considered to be very difficult.
In this thesis, it was surprisingly shown that using „brutal“ oxidizing conditions and superacids as solvents, metallocenes (also known as sandwich complexes) could be selectively oxidized to dications.
Additionally, the hexamethylbenzene dication C6(CH3)62+ was structurally characterized. In contrast to many compounds containing benzene rings (flat six-membered ring) the hexamethylbenzene dication has a pentagonal-pyramidal shape and contains a hexacoordinated carbon atom.
Entitled “Catalysis for Synthesis – Concepts and Scrutiny,” this year’s lecture will be presented by Prof. Dr. Alois Fürstner, Managing Director of the Max-Planck-Institut für Kohlenforschung in Mülheim/Ruhr.Learn more
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