Electron-rich, Lewis acidic diborane meets N-heterocyclic aromatics

• Verfasst von: Widera, Anna [VerfasserIn]
• Verfasst von: Filbeck, Erik [VerfasserIn]
• Verfasst von: Wadepohl, Hubert [VerfasserIn]
• Verfasst von: Kaifer, Elisabeth [VerfasserIn]
• Verfasst von: Himmel, Hans-Jörg [VerfasserIn]
• Titel: Electron-rich, Lewis acidic diborane meets N-heterocyclic aromatics
• Titelzusatz: formation and electron transfer in cyclophane boranes
• Verf.angabe: Anna Widera, Erik Filbeck, Hubert Wadepohl, Elisabeth Kaifer, and Hans-Jörg Himmel
• Jahr: 2020
• Umfang: 6 S.
• Fussnoten: Version of record online: February 27, 2020 ; Gesehen am 25.11.2021
• Titel Quelle: Enthalten in: Chemistry - a European journal
• Ort Quelle: Weinheim : Wiley-VCH, 1995
• Jahr Quelle: 2020
• Band/Heft Quelle: 26(2020), 15, Seite 3435-3440
• ISSN Quelle: 1521-3765
• DOI: doi:10.1002/chem.202000189
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: boron
• Sach-SW: cyclophanes
• Sach-SW: diborane
• Sach-SW: redox
• Sach-SW: viologens
• K10plus-PPN: 1779073755
• K10plus-PPN:
  Universitätsbibliothek
• Lokale URL UB: Zum Volltext

Abstract

Herein reported are the reactions of an electron-rich, Lewis acidic diborane with N-heterocyclic aromatics to give first members of an unprecedented family of highly charged cationic cyclophanes with diboranyl units. Tetracationic cyclophanes with 4,4‘-bipyridine/ 1,2-bis(4-pyridyl)ethylene and diboranyl units were synthesized and their redox chemistry was studied. Cyclisation of two diboranyl and two pyrazine units is accompanied by electron transfer from the diboranyl unit to the pyrazine. Our results pave the way for the integration of redox-active diboranyl units into cyclophanes and supramolecular structures.