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A Highly Lewis Acidic Strontium ansa-Arene Complex for Lewis Acid Catalysis and Isobutylene Polymerization.

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?Ag[Al(OR^F )₄ ], giving the base-free strontium-perfluoroalkoxyaluminate Sr[Al(OR^F )₄ ]₂ (OR^F =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.

SUBMITTER: Dabringhaus P

PROVIDER: S-EPMC7756322 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature

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A Highly Lewis Acidic Strontium ansa-Arene Complex for Lewis Acid Catalysis and Isobutylene Polymerization.

Dabringhaus Philipp P Schorpp Marcel M Scherer Harald H Krossing Ingo I

Angewandte Chemie (International ed. in English) 20200928 49

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 Ag[Al(ORF )4 ], giving the base-free strontium-perfluoroalkoxyaluminate Sr[Al(ORF )4 ]2 (ORF =OC(CF3 )3 ). Addition of an ansa-arene yielded the highly Lewis acidic, dicationic strontium ansa-arene complex. In preliminary experi ...[more]

PMID: 32776669

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