A Highly Lewis Acidic Strontium ansa-Arene Complex for Lewis Acid Catalysis and Isobutylene Polymerization |
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| Authors: | Philipp Dabringhaus Marcel Schorpp Dr Harald Scherer Prof Dr Ingo Krossing |
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| Institution: | Institut für anorganische und analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstraße 21, 79104 Freiburg i.Br., Germany |
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| Abstract: | The potential of a dicationic strontium ansa-arene complex for Lewis acid catalysis has been explored. The key to its synthesis was a simple salt metathesis from SrI2 and 2 AgAl(ORF)4], giving the base-free strontium-perfluoroalkoxyaluminate SrAl(ORF)4]2 (ORF=OC(CF3)3). Addition of an ansa-arene yielded the highly Lewis acidic, dicationic strontium ansa-arene complex. In preliminary experiments, the complex was successfully applied as a catalyst in CO2-reduction to CH4 and a surprisingly controlled isobutylene polymerization reaction. |
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| Keywords: | alkaline earth metals CO2 reduction Lewis acids polymerization reactions strontium |
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