How Do Redox Groups Behave around a Rigid Molecular Platform? Hexa(ferrocenylethynyl)benzenes and Their “Electrostatic” Redox Chemistry

✍ Scribed by Abdou K. Diallo; Jean-Claude Daran; François Varret; Jaime Ruiz; Didier Astruc

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 540 KB
• Volume: 48
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/anie.200900216

✦ Synopsis

Abstract

A new family of hexakis(ferrocenylethynyl)benzenes was synthesized by Negishi coupling from ethynylferrocenes and C~6~Br~6~ and can be reversibly oxidized to stable hexaferrocenium salts (see picture, Ar^F^=[3,5‐C~6~H~3~(CF~3~)~2~]). Their cyclic voltammograms show a single six‐electron wave, three distinct two‐electron waves, or a cascade of six single‐electron waves, depending on the electrolyte counterion and number of methyl substituents on the ferrocenyl groups.magnified image