Solvent-Responsive Radical Dimers

Solvent-Responsive Radical Dimers

An air- and thermally stable aryl dicyanomethyl radical is reported that switches between two dimeric formsa σ dimer and a π dimerby changing the solvent. The two dimer forms exhibit unique optical properties leading to solvatochromic behavior. The solvent-responsive behavior of these radicals can...

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Veröffentlicht in:Organic letters 2020-08, Vol.22 (15), p.6072-6076
Hauptverfasser: Peterson, Joshua P, Winter, Arthur H
Format: Artikel
Sprache:eng
Schlagworte:
Chemistry
Chemistry, Organic
Physical Sciences
Science & Technology
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Beschreibung
Zusammenfassung:An air- and thermally stable aryl dicyanomethyl radical is reported that switches between two dimeric formsa σ dimer and a π dimerby changing the solvent. The two dimer forms exhibit unique optical properties leading to solvatochromic behavior. The solvent-responsive behavior of these radicals can be explained by the higher polarizability of the pimer than the σ dimer that leads to pimer stabilization in polar solvents.
ISSN:1523-7060
1523-7052
DOI:10.1021/acs.orglett.0c02152