4.8 Article

Triggering Redox Activity in a Thiophene Compound: Radical Stabilization and Coordination Chemistry

Journal

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 56, Issue 27, Pages 7939-7943

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201703576

Keywords

density functional calculations; dinuclear copper complexes; redox-active ligands; thiophenes; X-ray crystallography

Funding

  1. University of Edinburgh
  2. EPSRC CRITICAT Centre for Doctoral Training [EP/L016419/1]
  3. Royal Society of Chemistry
  4. Engineering and Physical Sciences Research Council [1530605] Funding Source: researchfish

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The synthesis, metalation, and redox properties of an acyclic bis(iminothienyl)methene L- are presented. This pi-conjugated anion displayed pronounced redox activity, undergoing facile one-electron oxidation to the acyclic, metal-free, neutral radical L-center dot on reaction with FeBr2. In contrast, the reaction of L- with CuI formed the unique, neutral Cu2I2(L-center dot) complex of a ligand-centered radical, whereas reaction with the stronger oxidant AgBF4 formed the metal-free radical dication LC2+.

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