π-Expansion as gateway to viologen-based pimers

Geoffrey Groslambert; Vivien Andrieux; Malo Duquesnoy; Raphaël Rullan; Lhoussain Khrouz; Sandrine Denis-Quanquin; Stephan N. Steinmann; Tangui Le Bahers; Floris Chevallier; Denis Frath; Christophe Bucher

doi:10.1039/D5SC01361E

π-Expansion as gateway to viologen-based pimers†

Geoffrey Groslambert,

‡^a Vivien Andrieux,‡^a Malo Duquesnoy,^a Raphaël Rullan,^a Lhoussain Khrouz,^a Sandrine Denis-Quanquin,

^b Stephan N. Steinmann,

^b Tangui Le Bahers,

*^ac Floris Chevallier,

*^a Denis Frath

*^b and Christophe Bucher

*^b

Author affiliations

* Corresponding authors

^a ENS de Lyon, CNRS, LCH, UMR 5182, Lyon Cedex 07, France
E-mail: tangui.le_bahers@ens-lyon.fr, floris.chevallier@ens-lyon.fr

^b CNRS, ENS de Lyon, LCH, UMR 5182, Lyon Cedex 07, France
E-mail: denis.frath@ens-lyon.fr, christophe.bucher@ens-lyon.fr

^c Institut Universitaire de France, 5 rue Descartes, 75005 Paris, France

Abstract

The present article reports on a new and efficient synthetic strategy towards tetracene-bipyridiniums. On the basis of extensive experimental analyses supported by DFT simulations, we report the first observation of a mixed valence complex formed in solution under standard conditions from an unconstrained bis-viologene derivative.

Chemical Science

π-Expansion as gateway to viologen-based pimers†

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